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1.When students use the Internet, they have access ……………. inappropriate information and videos.A.  of B.  by C.  to D.  with6.Soil erosion which is caused by……………. can also lead to increased flooding.A.Deforestation  B.bamboo forests C.vegetable    D.forestation7.  Choose the word which has the underlined part pronounced differently from the rest.A.  affect B.  access C.  application D.  fact8.  Choose the word which is stressed differently from the rest.A.  depletion B.  chemical C.  erosion...
Đọc tiếp

1.When students use the Internet, they have access ……………. inappropriate information and videos.

A.  of B.  by C.  to D.  with

6.Soil erosion which is caused by……………. can also lead to increased flooding.

A.Deforestation  B.bamboo forests C.vegetable    D.forestation

7.  Choose the word which has the underlined part pronounced differently from the rest.

A.  affect B.  access C.  application D.  fact

8.  Choose the word which is stressed differently from the rest.

A.  depletion B.  chemical C.  erosion D.  assignment

9.  His father told him  …………….

A.  to not spend so much time on electronic devices every day.

B.  that he doesn't spend so much time on electronic devices every day.

C.  that not to spend so much time on electronic devices every day.

D.  not to spend so much time on electronic devices every day.

10.Choose the underlined word or phrase in each sentence that needs correcting.

Tom said me that he didn't enjoy romantic love stories.

A.   romantic love

B.  that             

C.  didn't enjoy           

D.  said                            

11.   We are trying to find …………….ways to stimulate learning and improve the way we teach.

A.  old and creative                            B.  new and creative      

C.  shocking and amazing D.  effective and inappropriate

12.  Choose the word which has the underlined part pronounced differently from the rest.

A.  release B.  threat C.  easy D.  increase           

13.  He told me that …………….

A.  he participated in the conservation campaign the previous day.

B.  he participated in the conservation campaign yesterday.

C.  he would participate in the conservation campaign tomorrow.

D.  he had participated in the conservation campaign the previous day.

14.Choose the underlined word or phrase in each sentence that needs correcting.

They asked the children don't throw rubbish into the river.

A.  don't throw              B.  into           C.  the river D.  asked                       15.  Choose the word which is stressed differently from the rest.

A.  digital B. criticize C.  effective D.  practical 

1
1 tháng 3 2022

1. C

6. A

7. D

8. B

9. D

10. D

11. B

12. B

13. D

14. A

15. C

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions. The advent of the Internet may be one of the most important technological developments in recent years. Never before have so many people had access to so many different sources of information. For all of the Internet’s advantages, however, people are currently becoming aware of some of its drawbacks and are looking for creative solutions. Among the current...
Đọc tiếp

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions.

The advent of the Internet may be one of the most important technological developments in recent years. Never before have so many people had access to so many different sources of information. For all of the Internet’s advantages, however, people are currently becoming aware of some of its drawbacks and are looking for creative solutions. Among the current problems, which include a general lack of reliability and numerous security concerns, the most crucial is speed.

First of all, the Internet has grown very quickly. In 1990, only a few academics had ever heard of the Internet. In 1996, over 50 million people used it. Every year, the number of people with access to the Internet doubles. The rapid growth has been a problem. The computer systems which run the Internet have not been able to keep up with the demand. Also, sometimes a request for information must pass through many routing computers before the information can be obtained. A request for information made in Paris might have to go through computers in New York, Los Angeles and Tokyo in order to obtain the required information. Consequently, service is often slow and unpredictable. Service also tends to be worse when the Internet is busiest - during the business day of the Western Hemisphere - which is also when companies need its service the most.

Some people are trying to harness the power of networked computers in such a way as to avoid this problem. In 1995, a group of American universities banded together to form what has come to be known as Internet II. Internet II is a smaller, more specialized system intended for academic use. Since it is more specialized, fewer users are allowed access. Consequently, the time required to receive information has decreased.

Businesses are beginning to explore a possible analogue to the Internet II. Many businesses are creating their own “Intranets”. These are systems that can only be used by the members of the same company. In theory, fewer users should translate into a faster system. Intranets are very useful for large national and international companies whose branches need to share information. Another benefit of an Intranet is an increased amount of security. Since only company employees have access to the information on the Intranet, their information is protected from competitors. While there is little doubt that the Internet will eventually be a fast

Which of the following best serves as the title for the passage?

A. Security concerns of the Internet.

B. Internet’s current problems. 

C. The development of the Internet.

D. The disadvantages of the Internet.

1
12 tháng 10 2017

Đáp án C.

Giải thích: Đoạn 1 giới thiệu về Internet. Đoạn 2 nói về việc Internet phát triển nhanh cùng với một vài nhược điểm cần khắc phục; Đoạn 3 nói về Internet II; Đoạn 4 nói về Intranets.

=> Cả bài đọc hiểu đều nói về sự phát triển của Internet.

Read the following passage and mark the letter A, B, C, or D to indicate the correct answer to each of the questions.The advent of the Internet may be one of the most important technological developments in recent years. Never before have so many people had access to so many different sources of information. For all of the Internet’s advantages, however, people are currently becoming aware of some of its drawbacks and are looking for creative solutions. Among the current problems, which...
Đọc tiếp

Read the following passage and mark the letter A, B, C, or D to indicate the correct answer to each of the questions.

The advent of the Internet may be one of the most important technological developments in recent years. Never before have so many people had access to so many different sources of information. For all of the Internet’s advantages, however, people are currently becoming aware of some of its drawbacks and are looking for creative solutions. Among the current problems, which include a general lack of reliability and numerous security concerns, the most crucial is speed.

First of all, the Internet has grown very quickly. In 1990, only a few academics had ever heard of the Internet. In 1996, over 50 million people used it. Every year, the number of people with access to the Internet doubles. The rapid growth has been a problem. The computer systems which run the Internet have not been able to keep up with the demand. Also, sometimes, a request for information must pass through many routing computers before the information can be obtained. A request for information made in Paris might have to go through computers in New York, Los Angeles and Tokyo in order to obtain the required information. Consequently, the service is often slow and unpredictable. Service also tends to be worse when the Internet is busiest - during the business day of the Western Hemisphere - which is also when companies need its service the most.

Some people are trying to harness the power of networked computers in such a way as to avoid this problem. In 1995, a group of American universities banded together to form what has come to be known as Internet II. Internet II is a smaller, more specialized system intended for academic use. Since it is more specialized, fewer users are allowed access. Consequently, the time required to receive information has decreased.

Businesses are beginning to explore a possible analogue to the Internet II. Many businesses are creating their own “Intranets”. These are systems that can only be used by the members of the same company. In theory, fewer users should translate into a faster system. Intranets are very useful for large national and international companies whose branches need to share information. Another benefit of an Intranet is an increased amount of security. Since only company employees have access to the information on the Intranet, their information is protected from competitors. While there is little doubt that the Internet will

eventually be a fast and reliable service, industry and the academic community have taken their own steps toward making more practical global networks.

As it can be inferred from the passage, what benefits does Internet II have over the Internet I?

A. Small businesses pay higher premiums to access to the Internet

B. Internet II contains more information than the Internet.

C. Internet II has fewer users and therefore is faster to access

D. There is no governmental intervention regulating Internet II.

1
11 tháng 10 2019

Đáp án C

Read the following passage and mark the letter A, B, C, or D to indicate the correct answer. The advent of the Internet may be one of the most important technological developments in recent years. Never before have so many people had access to so many different sources of information. For all of the Internet’s advantages, however, people are currently becoming aware of some of its drawbacks and are looking for creative solutions. Among the current problems, which include a general lack of...
Đọc tiếp

Read the following passage and mark the letter A, B, C, or D to indicate the correct answer.

The advent of the Internet may be one of the most important technological developments in recent years. Never before have so many people had access to so many different sources of information. For all of the Internet’s advantages, however, people are currently becoming aware of some of its drawbacks and are looking for creative solutions. Among the current problems, which include a general lack of reliability and numerous security concerns, the most crucial is speed.

First of all, the Internet has grown very quickly. In 1990, only a few academics had ever heard of the Internet. In 1996, over 50 million people used it. Every year, the number of people with access to the Internet doubles. The rapid growth has been a problem. The computer systems which run the Internet have not been able to keep up with the demand. Also, sometimes, a request for information must pass through many routing computers before the information can be obtained. A request for information made in Paris might have to go through computers in New York, Los Angeles and Tokyo in order to obtain the required information. Consequently, the service is often slow and unpredictable. Service also tends to be worse when the Internet is busiest - during the business day of the Western Hemisphere - which is also when companies need its service the most.

Some people are trying to harness the power of networked computers in such a way as to avoid this problem. In 1995, a group of American universities banded together to form what has come to be known as Internet II. Internet II is a smaller, more specialized system intended for academic use. Since it is more specialized, fewer users are allowed access. Consequently, the time required to receive information has decreased.

Businesses are beginning to explore a possible analogue to the Internet II. Many businesses are creating their own “Intranets”. These are systems that can only be used by the members of the same company. In theory, fewer users should translate into a faster system. Intranets are very useful for large national and international companies whose branches need to share information. Another benefit of an Intranet is an increased amount of security. Since only company employees have access to the information on the Intranet, their information is protected from competitors. While there is little doubt that the Internet will eventually be a fast and reliable service, industry and the academic community have taken their own steps toward making more practical global networks.

 

As it can be inferred from the passage, what benefits does Internet II have over the Internet I?

A. Small businesses pay higher premiums to access to the Internet

B. Internet II contains more information than the Internet

C. Internet II has fewer users and therefore is faster to access 

D. There is no governmental intervention regulating Internet II

1
5 tháng 2 2018

Đáp án C

Internet II có điểm gì hơn Internet I

A. Doanh nghiệp nhỏ trả phí bảo hiểm cao hơn để truy cập Internet

B. Internet II chứa nhiều thông tin hơn Internet.

C. Internet II có ít người dùng hơn và do đó truy cập nhanh hơn

D. Không có sự can thiệp của chính phủ điều chỉnh Internet II.

Read the following passage and mark the letter A, B, C, or D to indicate the correct answer. The advent of the Internet may be one of the most important technological developments in recent years. Never before have so many people had access to so many different sources of information. For all of the Internet’s advantages, however, people are currently becoming aware of some of its drawbacks and are looking for creative solutions. Among the current problems, which include a general lack of...
Đọc tiếp

Read the following passage and mark the letter A, B, C, or D to indicate the correct answer.

The advent of the Internet may be one of the most important technological developments in recent years. Never before have so many people had access to so many different sources of information. For all of the Internet’s advantages, however, people are currently becoming aware of some of its drawbacks and are looking for creative solutions. Among the current problems, which include a general lack of reliability and numerous security concerns, the most crucial is speed.

First of all, the Internet has grown very quickly. In 1990, only a few academics had ever heard of the Internet. In 1996, over 50 million people used it. Every year, the number of people with access to the Internet doubles. The rapid growth has been a problem. The computer systems which run the Internet have not been able to keep up with the demand. Also, sometimes, a request for information must pass through many routing computers before the information can be obtained. A request for information made in Paris might have to go through computers in New York, Los Angeles and Tokyo in order to obtain the required information. Consequently, the service is often slow and unpredictable. Service also tends to be worse when the Internet is busiest - during the business day of the Western Hemisphere - which is also when companies need its service the most.

Some people are trying to harness the power of networked computers in such a way as to avoid this problem. In 1995, a group of American universities banded together to form what has come to be known as Internet II. Internet II is a smaller, more specialized system intended for academic use. Since it is more specialized, fewer users are allowed access. Consequently, the time required to receive information has decreased.

Businesses are beginning to explore a possible analogue to the Internet II. Many businesses are creating their own “Intranets”. These are systems that can only be used by the members of the same company. In theory, fewer users should translate into a faster system. Intranets are very useful for large national and international companies whose branches need to share information. Another benefit of an Intranet is an increased amount of security. Since only company employees have access to the information on the Intranet, their information is protected from competitors.

While there is little doubt that the Internet will eventually be a fast and reliable service, industry and the academic community have taken their own steps toward making more practical global networks.

As it can be inferred from the passage, what benefits does Internet II have over the Internet I?

A. Small businesses pay higher premiums to access to the Internet

B. Internet II contains more information than the Internet

C. Internet II has fewer users and therefore is faster to access

D. There is no governmental intervention regulating Internet II

1
22 tháng 10 2018

C

Có thể suy luận từ đoạn văn này, Internet II có lợi ích gì hơn Internet?

A. Các doanh nghiệp nhỏ trả phí bảo hiểm cao hơn để truy cập vào Internet.

B. Internet II chứa nhiều thông tin hơn Internet.

C. Internet II có ít người dùng hơn và do đó nhanh hơn để truy cập.

D. Không có can thiệp của chính phủ quy định Internet II.

Thông tin ở những câu cuối đoạn 3:Internet II is a smaller, more specialized system intended for academic use. Since it is more specialized, fewer users are allowed access. Consequently, the time required to receive information has decreased.

Tạm dịch: Internet II là một hệ thống nhỏ hơn, chuyên dụng hơn dành cho việc sử dụng học thuật. Vì nó là chuyên biệt hơn nên người dùng ít được phép truy cập. Do đó, thời gian cần thiết để nhận thông tin giảm.

=> Đáp án: C

Read the following passage and mark the letter A, B, C, or D to indicate the correct answer to each of the questions.The advent of the Internet may be one of the most important technological developments in recent years. Never before have so many people had access to so many different sources of information. For all of the Internet’s advantages, however, people are currently becoming aware of some of its drawbacks and are looking for creative solutions. Among the current problems, which...
Đọc tiếp

Read the following passage and mark the letter A, B, C, or D to indicate the correct answer to each of the questions.

The advent of the Internet may be one of the most important technological developments in recent years. Never before have so many people had access to so many different sources of information. For all of the Internet’s advantages, however, people are currently becoming aware of some of its drawbacks and are looking for creative solutions. Among the current problems, which include a general lack of reliability and numerous security concerns, the most crucial is speed.

First of all, the Internet has grown very quickly. In 1990, only a few academics had ever heard of the Internet. In 1996, over 50 million people used it. Every year, the number of people with access to the Internet doubles. The rapid growth has been a problem. The computer systems which run the Internet have not been able to keep up with the demand. Also, sometimes, a request for information must pass through many routing computers before the information can be obtained. A request for information made in Paris might have to go through computers in New York, Los Angeles and Tokyo in order to obtain the required information. Consequently, the service is often slow and unpredictable. Service also tends to be worse when the Internet is busiest - during the business day of the Western Hemisphere - which is also when companies need its service the most.

Some people are trying to harness the power of networked computers in such a way as to avoid this problem. In 1995, a group of American universities banded together to form what has come to be known as Internet II. Internet II is a smaller, more specialized system intended for academic use. Since it is more specialized, fewer users are allowed access. Consequently, the time required to receive information has decreased.

Businesses are beginning to explore a possible analogue to the Internet II. Many businesses are creating their own “Intranets”. These are systems that can only be used by the members of the same company. In theory, fewer users should translate into a faster system. Intranets are very useful for large national and international companies whose branches need to share information. Another benefit of an Intranet is an increased amount of security. Since only company employees have access to the information on the Intranet, their information is protected from competitors. While there is little doubt that the Internet will

eventually be a fast and reliable service, industry and the academic community have taken their own steps toward making more practical global networks.

In the passage, which of the following ts NOT true of the Internet?

A. It has become increasingly less popular.

B. It has created a sense of financial security

C. It tends to be unreliable

D. It is sometimes too slow to access

1
15 tháng 11 2017

Đáp án A

Read the following passage and mark the letter A, B, C, or D to indicate the correct answer. The advent of the Internet may be one of the most important technological developments in recent years. Never before have so many people had access to so many different sources of information. For all of the Internet’s advantages, however, people are currently becoming aware of some of its drawbacks and are looking for creative solutions. Among the current problems, which include a general lack of...
Đọc tiếp

Read the following passage and mark the letter A, B, C, or D to indicate the correct answer.

The advent of the Internet may be one of the most important technological developments in recent years. Never before have so many people had access to so many different sources of information. For all of the Internet’s advantages, however, people are currently becoming aware of some of its drawbacks and are looking for creative solutions. Among the current problems, which include a general lack of reliability and numerous security concerns, the most crucial is speed.

First of all, the Internet has grown very quickly. In 1990, only a few academics had ever heard of the Internet. In 1996, over 50 million people used it. Every year, the number of people with access to the Internet doubles. The rapid growth has been a problem. The computer systems which run the Internet have not been able to keep up with the demand. Also, sometimes, a request for information must pass through many routing computers before the information can be obtained. A request for information made in Paris might have to go through computers in New York, Los Angeles and Tokyo in order to obtain the required information. Consequently, the service is often slow and unpredictable. Service also tends to be worse when the Internet is busiest - during the business day of the Western Hemisphere - which is also when companies need its service the most.

Some people are trying to harness the power of networked computers in such a way as to avoid this problem. In 1995, a group of American universities banded together to form what has come to be known as Internet II. Internet II is a smaller, more specialized system intended for academic use. Since it is more specialized, fewer users are allowed access. Consequently, the time required to receive information has decreased.

Businesses are beginning to explore a possible analogue to the Internet II. Many businesses are creating their own “Intranets”. These are systems that can only be used by the members of the same company. In theory, fewer users should translate into a faster system. Intranets are very useful for large national and international companies whose branches need to share information. Another benefit of an Intranet is an increased amount of security. Since only company employees have access to the information on the Intranet, their information is protected from competitors. While there is little doubt that the Internet will eventually be a fast and reliable service, industry and the academic community have taken their own steps toward making more practical global networks.

 

In the passage, which of the following ts NOT true of the Internet?

A. It has become increasingly less popular

B. It has created a sense of financial security

C. It tends to be unreliable

D. It is sometimes too slow to access

1
29 tháng 9 2017

Đáp án A

Câu nào sau đây không đúng sự thật của Internet?

A. Nó ngày càng trở nên ít phổ biến hơn.

B. Nó đã tạo ra một cảm giác an toàn tài chính

C. Nó có xu hướng không đáng tin cậy

D. Đôi khi quá chậm để truy cập

Read the following passage and mark the letter A, B, C, or D to indicate the correct answer. The advent of the Internet may be one of the most important technological developments in recent years. Never before have so many people had access to so many different sources of information. For all of the Internet’s advantages, however, people are currently becoming aware of some of its drawbacks and are looking for creative solutions. Among the current problems, which include a general lack of...
Đọc tiếp

Read the following passage and mark the letter A, B, C, or D to indicate the correct answer.

The advent of the Internet may be one of the most important technological developments in recent years. Never before have so many people had access to so many different sources of information. For all of the Internet’s advantages, however, people are currently becoming aware of some of its drawbacks and are looking for creative solutions. Among the current problems, which include a general lack of reliability and numerous security concerns, the most crucial is speed.

First of all, the Internet has grown very quickly. In 1990, only a few academics had ever heard of the Internet. In 1996, over 50 million people used it. Every year, the number of people with access to the Internet doubles. The rapid growth has been a problem. The computer systems which run the Internet have not been able to keep up with the demand. Also, sometimes, a request for information must pass through many routing computers before the information can be obtained. A request for information made in Paris might have to go through computers in New York, Los Angeles and Tokyo in order to obtain the required information. Consequently, the service is often slow and unpredictable. Service also tends to be worse when the Internet is busiest - during the business day of the Western Hemisphere - which is also when companies need its service the most.

Some people are trying to harness the power of networked computers in such a way as to avoid this problem. In 1995, a group of American universities banded together to form what has come to be known as Internet II. Internet II is a smaller, more specialized system intended for academic use. Since it is more specialized, fewer users are allowed access. Consequently, the time required to receive information has decreased.

Businesses are beginning to explore a possible analogue to the Internet II. Many businesses are creating their own “Intranets”. These are systems that can only be used by the members of the same company. In theory, fewer users should translate into a faster system. Intranets are very useful for large national and international companies whose branches need to share information. Another benefit of an Intranet is an increased amount of security. Since only company employees have access to the information on the Intranet, their information is protected from competitors.

While there is little doubt that the Internet will eventually be a fast and reliable service, industry and the academic community have taken their own steps toward making more practical global networks.

In the passage, which of the following ts NOT true of the Internet?

A. It has become increasingly less popular.

B. It has created a sense of financial security

C. It tends to be unreliable 

D. It is sometimes too slow to access

1
11 tháng 7 2018

A

Trong đoạn văn, câu  nào sau đây KHÔNG đúng với Internet?

A. Nó đã trở thành ngày càng ít phổ biến.

B. Nó đã tạo ra một cảm giác an toàn tài chính

C. Nó có khuynh hướng không đáng tin cậy

D. Đôi khi quá chậm để truy cập

Thông tin ở 2 câu đầu của bài: The advent of the Internet may be one of the most important technological developments in recent years. Never before have so many people had access to so many different sources of information.

Tạm dịch: Sự xuất hiện của Internet có thể là một trong những phát triển công nghệ quan trọng nhất trong những năm gần đây. Chưa bao giờ có quá nhiều người có thể truy cập vào rất nhiều nguồn thông tin khác nhau như vậy.

ð Internet ngày càng phổ biến chứ ko phải ngày càng ít phổ biến

 Đáp án: A

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions. The advent of the Internet may be one of the most important technological developments in recent years. Never before have so many people had access to so many different sources of information. For all of the Internet’s advantages, however, people are currently becoming aware of some of its drawbacks and are looking for creative solutions. Among the current...
Đọc tiếp

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions.

The advent of the Internet may be one of the most important technological developments in recent years. Never before have so many people had access to so many different sources of information. For all of the Internet’s advantages, however, people are currently becoming aware of some of its drawbacks and are looking for creative solutions. Among the current problems, which include a general lack of reliability and numerous security concerns, the most crucial is speed.

First of all, the Internet has grown very quickly. In 1990, only a few academics had ever heard of the Internet. In 1996, over 50 million people used it. Every year, the number of people with access to the Internet doubles. The rapid growth has been a problem. The computer systems which run the Internet have not been able to keep up with the demand. Also, sometimes a request for information must pass through many routing computers before the information can be obtained. A request for information made in Paris might have to go through computers in New York, Los Angeles and Tokyo in order to obtain the required information. Consequently, service is often slow and unpredictable. Service also tends to be worse when the Internet is busiest - during the business day of the Western Hemisphere - which is also when companies need its service the most.

Some people are trying to harness the power of networked computers in such a way as to avoid this problem. In 1995, a group of American universities banded together to form what has come to be known as Internet II. Internet II is a smaller, more specialized system intended for academic use. Since it is more specialized, fewer users are allowed access. Consequently, the time required to receive information has decreased.

Businesses are beginning to explore a possible analogue to the Internet II. Many businesses are creating their own “Intranets”. These are systems that can only be used by the members of the same company. In theory, fewer users should translate into a faster system. Intranets are very useful for large national and international companies whose branches need to share information. Another benefit of an Intranet is an increased amount of security. Since only company employees have access to the information on the Intranet, their information is protected from competitors. While there is little doubt that the Internet will eventually be a fast a reliable service, industry and the academic community have taken their own steps toward making more practical global networks.

According to the passage, what benefits does Internet II have over the Internet?

A. There is no governmental intervention regulating Internet II. 

B. Small businesses pay higher premiums to access the Internet.

C. Internet II contains more information than the Internet. 

D. Internet II has fewer users and therefore is faster to access.

1
6 tháng 6 2017

Đáp án D.
Ý trong bài: “Internet II is a smaller, more specialized system intended for academic use. Since it is more specialized, fewer users are allowed to access. Consequently, the time required to receive information has decreased.” 
(Internet II là một hệ thống nhỏ hơn, chuyên dụng hơn dành cho mục đích học tập. Vì nó là chuyên môn hơn, ít người dùng hơn được phép truy cập. Do đó, thời gian cần thiết để nhận thông tin đã giảm (tức là thời gian truy cập nhanh hơn.

Read the following passage and mark the letter A, B, C, or D to indicate the correct answer to each of the questions.The advent of the Internet may be one of the most important technological developments in recent years. Never before have so many people had access to so many different sources of information. For all of the Internet’s advantages, however, people are currently becoming aware of some of its drawbacks and are looking for creative solutions. Among the current problems, which...
Đọc tiếp

Read the following passage and mark the letter A, B, C, or D to indicate the correct answer to each of the questions.

The advent of the Internet may be one of the most important technological developments in recent years. Never before have so many people had access to so many different sources of information. For all of the Internet’s advantages, however, people are currently becoming aware of some of its drawbacks and are looking for creative solutions. Among the current problems, which include a general lack of reliability and numerous security concerns, the most crucial is speed.

First of all, the Internet has grown very quickly. In 1990, only a few academics had ever heard of the Internet. In 1996, over 50 million people used it. Every year, the number of people with access to the Internet doubles. The rapid growth has been a problem. The computer systems which run the Internet have not been able to keep up with the demand. Also, sometimes, a request for information must pass through many routing computers before the information can be obtained. A request for information made in Paris might have to go through computers in New York, Los Angeles and Tokyo in order to obtain the required information. Consequently, the service is often slow and unpredictable. Service also tends to be worse when the Internet is busiest - during the business day of the Western Hemisphere - which is also when companies need its service the most.

Some people are trying to harness the power of networked computers in such a way as to avoid this problem. In 1995, a group of American universities banded together to form what has come to be known as Internet II. Internet II is a smaller, more specialized system intended for academic use. Since it is more specialized, fewer users are allowed access. Consequently, the time required to receive information has decreased.

Businesses are beginning to explore a possible analogue to the Internet II. Many businesses are creating their own “Intranets”. These are systems that can only be used by the members of the same company. In theory, fewer users should translate into a faster system. Intranets are very useful for large national and international companies whose branches need to share information. Another benefit of an Intranet is an increased amount of security. Since only company employees have access to the information on the Intranet, their information is protected from competitors. While there is little doubt that the Internet will eventually be a fast and reliable service, industry and the academic community have taken their own steps toward making more practical global networks.

According to the author, what is one reason why the Internet is sometimes slow?

A. Phone lines are often too busy with phone calls and fax transmissions to handle Internet traffic.

B. Most people do not have computers that are fast enough to take advantage of the Internet.

C. Often a request must travel through many computers before it reaches its final destination.

D. Scientists take up too much time on the Internet, thus slowing it down for everyone else.

1
5 tháng 8 2019

Đáp án C