In the expression 2 □ 3 □ 4 □ 5, an operation sign (addition, subtraction,multiplication or division) is placed in each □. The same operation may berepeated, and brackets may be inserted. What is the...

#Tiếng anh lớp 7

1

DT

Đỗ Thanh Hải

CTVVIP

4 tháng 12 2021

Mấy cái từ bài cho đâu bn

NH

nguyeen huongg

4 tháng 12 2021

nó chỉ có thế th ah

IV. Fill in the each gap with an expression in the box. 1. Be careful! The _____________ says “No U-Turn”.2. You ran through the stop sign. May I see your ________________, please?3. It is the law that motorists give way to pedestrians at _______________.4. You can book your _______________ online, by phone, or through a travel agent.5. Slow down – the _______________ on this road is 60 mph.6. We were stuck in a _______________ on the freeway for two hours.7. When we got to the _______________...

TG

Trần Gia Quang Hoàng

9 tháng 2 2022

IV. Fill in the each gap with an expression in the box. 1. Be careful! The _____________ says “No U-Turn”.2. You ran through the stop sign. May I see your ________________, please?3. It is the law that motorists give way to pedestrians at _______________.4. You can book your _______________ online, by phone, or through a travel agent.5. Slow down – the _______________ on this road is 60 mph.6. We were stuck in a _______________ on the freeway for two hours.7. When we got to the _______________...

#Tiếng anh lớp 7

4

TP

Thư Phan

9 tháng 2 2022

1. Be careful! The ______road sign_______ says “No U-Turn”.
2. You ran through the stop sign. May I see your ________driving licence________, please?
3. It is the law that motorists give way to pedestrians at _______zebra crossings________.
4. You can book your _______plane tickets________ online, by phone, or through a travel agent.
5. Slow down – the _______speed limit________ on this road is 60 mph.
6. We were stuck in a _______ trafic jam________ on the freeway for two hours.
7. When we got to the ________railway station_______ the train had left.
8. What _________means of transport______ did they use at that time? – horses
9. _______road safety________is taught to young children to avoid road accidents.
10. You should wear a _______cycle helmet________ when riding a bike.

Đúng(2)

NN

Nguyễn Ngọc Khánh Huyền

9 tháng 2 2022

thiếu

Đúng(2)

PN

Phạm Ngọc Bảo Trâm

12 tháng 2 2023

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 from 43 to 50.The need for a surgical operation, especially an emergency operation, almost always comes as a severe shock to the patient and his family. Despite modern advances, most people still have an irrational fear of hospitals and anaesthetics. Patients do riot often believe they really need surgery- cutting into a part of the body as opposed to...

#Tiếng anh lớp 8

2

I

(.I_CAN_FLY.)

12 tháng 2 2023

1.road sign

2.driving licence

3.zebra crossing

4.plane tickets

5.speed limit

6.traffic jam

7.railway station

8.means of transport

9.road safety

10.cycle helmet

Đúng(1)

NN

Nguyễn Ngọc Thiện Nhân

12 tháng 2 2023

1. Be careful! The road sign says “No U-Turn”.

2. You ran through the stop sign. May I see your driving licence, please?
3. It is the law that motorists give way to pedestrians at zebra crossings.
4. You can book your plane tickets online, by phone, or through a travel agent.
5. Slow down – the speed limit on this road is 60 mph.
6. We were stuck in a on the freeway for two hours.
7. When we got to the trafic jam the train had left.
8. What mean of transort did they use at that time? – horses
9. road safety is taught to young children to avoid road accidents.
10. You should wear a cycle helmet when riding a bike.

Đúng(1)

LQ

Lê Quỳnh Anh

2 tháng 8 2018

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 from 43 to 50.

The need for a surgical operation, especially an emergency operation, almost always comes as a severe shock to the patient and his family. Despite modern advances, most people still have an irrational fear of hospitals and anaesthetics. Patients do riot often believe they really need surgery- cutting into a part of the body as opposed to treatment with drugs.

In the early year of the 20^th century, there was little specialization in surgery. A good surgeon was capable of performing almost every operation that had been advised up to that time. Today the situation is different. Operations are now being carried out that were not even dreamed of fifty years ago. The heart can be safely opened and its valves repaired. Cloyed blood vessels can be clean out, and broken ones mended and replaced. A lung, the whole stomach, or even part of the brain can be removed and still permit the patient to live a comfortable and satisfactory life. However, not every surgeon wants to, or is qualified to carry out every type of modern operation.

The scope of surgery has increase remarkable in the past decades. Its safety has increased, too. Deaths from most operations are about 20% of what they were in 1910 and surgery has been extended in many directions, for example, to certain types of birth defects in new born babies, and at the other end of the scale, to life-saving operation for the octogenarian .The hospital stay after surgery has been shortened to as little as a week for most major operations. Most patients are out of bed on the day after an operation and may be back at work in two or three weeks.

One of the most revolutionary areas of modern surgery is that of organ transplants. Until a few decades ago, no person, except an identical twins, was able to accept into his body the tissues of another person without reacting against them and eventually killing them. Recently, however, it has been discovered that with the use of X-rays and special drugs, it is possible to graft tissues from one person to another which will survive for periods of a year or more. Kidneys have been successfully transplanted between non-identical twins. Heart and lung transplants have also been reasonably successful.

“Spare parts” surgery, the simple routine replacement of all worn-out organs by new ones, is still a dream of the future but surgery is ready for such miracles. In the meantime, you can be happy if the doctors say to you: “Yes, l think it is possible to operate on you for this condition”.

What is the similar meaning to the word “octogenarian”?

A. eighteen-year-old

B. person in his eighties.

C. person having eighth operation

D. eye specialist

1

DH

Dương Hoàn Anh

2 tháng 8 2018

Đáp án B

Câu hỏi từ vựng.

Octogenarian (n): người thọ 80 tuổi = B. person in his eighties.

Các đáp án còn lại:

A. 80 tuổi.

C. người có ca phẫu thuật lần thứ 80.

D. chuyên gia về mắt.

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 following questions. In the history of technology, computers and calculators were innovative developments. They are essentially different from all other machines because they have a memory. This memory stores instructions and information. In a calculator, the instructions are the various functions of arithmetic, which are permanently remembered by the machine and cannot...

LQ

Lê Quỳnh Anh

12 tháng 1 2017

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 following questions.

In the history of technology, computers and calculators were innovative developments. They are essentially different from all other machines because they have a memory. This memory stores instructions and information. In a calculator, the instructions are the various functions of arithmetic, which are permanently remembered by the machine and cannot be altered or added to. The information consists of the numbers which are keyed in.

An electronic pocket calculator can perform almost instant arithmetic. A calculator requires an input unit to feed in numbers, a processing unit to make the calculation, a memory unit, and an output unit to display the result. The calculator is powered by a small battery or by a panel of solar cells. Inside is a microchip that contains the memory and processing units and also controls the input unit, which is the keyboard, and the output unit, which is the display.

The input unit has keys for numbers and operations. Beneath the key is a printed circuit board containing a set of contacts for each key. Pressing a key closes the contacts and sends a signal along a pair of lines in the circuit board to the processing unit, in which the binary code for that key is stored in the memory. The processing unit also sends the code to the display. Each key is connected by a different pair of lines to the processing unit, which repeatedly checks the lines to find out when a pair is linked by a key.

The memory unit stores the arithmetic instructions for the processing unit and holds the temporary results that occur during calculation. Storage cells in the memory unit hold the binary codes for the keys that have been pressed. The number codes, together with the operation code for the plus key, are held in temporary cells until the processing unit requires them.

When the equals key is pressed, it sends a signal to the processing unit. This takes the operation code - for example, addition - and the two numbers being held in the memory unit and performs the operation on the two numbers. After the addition is done, the result goes to the decoder in the calculator's microchip. This code is then sent to the liquid crystal display unit, which shows the result, or output, of the calculation.

What can be inferred about machines that are not calculators or computers?

A. They are older than computers.

B. They are less expensive than computers.

C. They cannot store information in a memory.

D. They have simple memory and processing units.

1

DH

Dương Hoàn Anh

12 tháng 1 2017

Kiến thức: Đọc hiểu

Giải thích:

Có thể được suy ra điều gì về những loại máy móc mà không phải là máy tính bỏ túi hay máy tính?

A. chúng già cỗi hơn máy tính. B. chúng ít tốn kém hơn so với máy tính.

C. chúng không thể lưu trữ thông tin trong bộ nhớ. D. chúng có bộ nhớ đơn giản và các đơn vị xử lí.

Thông tin: They are essentially different from all other machines because they have a memory.

Tạm dịch: Chúng khác biệt cơ bản với tất cả các loại máy móc khác vì chúng có bộ nhớ.

=> Các loại máy móc khác không có bộ nhớ => Chúng không thể lưu trữ thông tin trong bộ nhớ.

Chọn 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.In the history of technology, computers and calculators were innovative developments. They are essentially different from all other machines because they have a memory. This memory stores instructions and information. In a calculator, the instructions are the various functions of arithmetic, which are permanently remembered by the machine and cannot be...

LQ

Lê Quỳnh Anh

29 tháng 12 2017

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.

In the history of technology, computers and calculators were innovative developments. They are essentially different from all other machines because they have a memory. This memory stores instructions and information. In a calculator, the instructions are the various functions of arithmetic, which are permanently remembered by the machine and cannot be altered or added to. The information consists of the numbers keyed in.

An electronic pocket calculator can perform almost instant arithmetic. A calculator requires an input unit to feed in numbers, a processing unit to make the calculation, a memory unit, and an output unit to display the result. The calculator is powered by a small battery or by a panel of solar cells. Inside is a microchip that contains the memory and processing units and also controls the input unit, which is the keyboard, and the output unit, which is the display.

The input unit has keys for numbers and operations. Beneath the key is a printed circuit board containing a set of contacts for each key. Pressing a key closes the contacts and sends a signal along a pair of lines in the circuit board to the processing unit, in which the binary code for that key is stored in the memory. The processing unit also sends the code to the display. Each key is connected by a different pair of lines to the processing unit, which repeatedly checks the lines to find out when a pair is linked by a key.

The memory unit stores the arithmetic instructions for the processing unit and holds the temporary results that occur during calculation. Storage cells in the memory unit hold the binary codes for the keys that have been pressed. The number codes, together with the operation code for the plus key, are held in temporary cells until the processing unit requires them.
When the equals key is pressed, it sends a signal to the processing unit. This takes the operation code-for example, addition-and the two numbers being held in the memory unit and performs the operation on the two numbers. A full adder does the addition, and the result goes to the decoder in the calculator's microchip. This code is then sent to the liquid crystal display unit, which shows the result, or output, of the calculation.

What can be inferred about machines that are not calculators or computers?

A. They can not store information in a memory

B. They are less expensive than computers

C. They have simple memory and processing units

D. They are older than computers

1

DH

Dương Hoàn Anh

29 tháng 12 2017

Đáp án A

Có thể được suy ra điều gì về những loại máy móc mà không phải là máy tính bỏ túi hay máy tính?

A. chúng không thể lưu trữ thông tin trong bộ nhớ.

B. chúng ít tốn kém hơn so với máy tính.

C. chúng có bộ nhớ đơn giản và các đơn vị xử lí.

D. chúng già cỗi hơn máy tính.

Thông tin ở câu: “ They are essentially different from all other machines because they have a memory.” (Chúng khác biệt cơ bản với tất cả các loại máy móc khác vì chúng có bộ nhớ.) => Các loại máy móc khác không có bộ nhớ => Chúng không thể lưu trữ thông tin trong bộ nhớ

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 following questions. In the history of technology, computers and calculators were innovative developments. They are essentially different from all other machines because they have a memory. This memory stores instructions and information. In a calculator, the instructions are the various functions of arithmetic, which are permanently remembered by the machine and cannot...

LQ

Lê Quỳnh Anh

16 tháng 11 2018

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 following questions.

In the history of technology, computers and calculators were innovative developments. They are essentially different from all other machines because they have a memory. This memory stores instructions and information. In a calculator, the instructions are the various functions of arithmetic, which are permanently remembered by the machine and cannot be altered or added to. The information consists of the numbers which are keyed in.

An electronic pocket calculator can perform almost instant arithmetic. A calculator requires an input unit to feed in numbers, a processing unit to make the calculation, a memory unit, and an output unit to display the result. The calculator is powered by a small battery or by a panel of solar cells. Inside is a microchip that contains the memory and processing units and also controls the input unit, which is the keyboard, and the output unit, which is the display.

The input unit has keys for numbers and operations. Beneath the key is a printed circuit board containing a set of contacts for each key. Pressing a key closes the contacts and sends a signal along a pair of lines in the circuit board to the processing unit, in which the binary code for that key is stored in the memory. The processing unit also sends the code to the display. Each key is connected by a different pair of lines to the processing unit, which repeatedly checks the lines to find out when a pair is linked by a key.

The memory unit stores the arithmetic instructions for the processing unit and holds the temporary results that occur during calculation. Storage cells in the memory unit hold the binary codes for the keys that have been pressed. The number codes, together with the operation code for the plus key, are held in temporary cells until the processing unit requires them.

When the equals key is pressed, it sends a signal to the processing unit. This takes the operation code - for example, addition - and the two numbers being held in the memory unit and performs the operation on the two numbers. After the addition is done, the result goes to the decoder in the calculator's microchip. This code is then sent to the liquid crystal display unit, which shows the result, or output, of the calculation.

In what part of the calculator are the processing and memory units?

A. The output unit

B. The solar cells

C. The battery

D. The microchip

1

DH

Dương Hoàn Anh

16 tháng 11 2018

Kiến thức: Đọc hiểu

Giải thích:

Trong phần nào của máy tính bỏ túi là các đơn vị xử lý và đơn vị bộ nhớ?

A. đơn vị xuất B. pin mặt trời C. pin D. vi mạch

Thông tin: Inside is a microchip that contains the memory and processing units...

Tạm dịch: Bên trong là một vi mạch chứa bộ nhớ và các đơn vị xử lí...

Chọn D

Dịch bài đọc:

Trong lịch sử công nghệ, máy tính và máy tính bỏ túi là những phát triển mang tính cách mạng. Chúng khác biệt cơ bản với tất cả các loại máy móc khác vì chúng có bộ nhớ. Bộ nhớ này lưu trữ các hướng dẫn và thông tin. Trong một máy tính bỏ túi, các hướng dẫn là các chức năng khác nhau của số học, được ghi nhớ vĩnh viễn bởi máy và không thể thay đổi hoặc thêm vào. Thông tin bao gồm các số được nhập vào.

Một máy tính bỏ túi điện tử có thể thực hiện gần như các phép toán tức thời. Máy tính đòi hỏi một đơn vị đầu vào để nạp số liệu, một đơn vị xử lý để tính toán, một đơn vị bộ nhớ, và một đơn vị đầu ra để hiển thị kết quả. Máy tính được trang bị một pin nhỏ hoặc bảng các pin mặt trời. Bên trong là một vi mạch có chứa bộ nhớ và các đơn vị xử lý và còn điều khiển đơn vị đầu vào, là bàn phím và đơn vị đầu ra, là màn hình hiển thị.

Đơn vị đầu vào có các phím số và phép toán. Bên dưới phím là một bảng mạch in có chứa một bộ công tắc cho mỗi phím. Nhấn một phím có thể đóng công tắc và gửi một tín hiệu dọc theo một cặp đường dây trong bảng mạch tới bộ phận xử lý, mà trong đó mã nhị phân cho phím đó được lưu trong bộ nhớ. Đơn vị xử lý cũng gửi mã tới màn hình hiển thị. Mỗi phím được nối bởi một cặp dây nối khác nhau tới đơn vị xử lý, nó liên tục kiểm tra các dây nối để tìm ra khi một cặp được nối với một phím.

Bộ nhớ lưu trữ các chỉ dẫn số học cho bộ phận xử lý và giữ các kết quả tạm thời được tìm thấy trong quá trình tính toán. Các ô lưu trữ trong bộ nhớ chứa các mã nhị phân cho các phím đã được nhấn. Các mã , cùng với mã hoạt động của phím cộng, được giữ trong các ô tạm thời cho đến khi đơn vị xử lý yêu cầu chúng.

Khi phím bằng được nhấn, nó sẽ gửi một tín hiệu đến bộ phận xử lý. Nó sẽ lấy mã phép toán - ví dụ: cộng - và hai số sẽ được giữ trong bộ nhớ và thực hiện thao tác trên hai số đó. Một mạc cộng hoàn chỉnh làm công việc bổ sung, và kết quả đi đến bộ giải mã trong vi mạch của máy tính. Mã này sau đó được gửi đến đơn vị hiển thị tinh thể lỏng, cho thấy kết quả, hoặc đầu ra của tính toán.

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 from 43 to 50.The need for a surgical operation, especially an emergency operation, almost always comes as a severe shock to the patient and his family. Despite modern advances, most people still have an irrational fear of hospitals and anaesthetics. Patients do riot often believe they really need surgery- cutting into a part of the body as opposed to...

LQ

Lê Quỳnh Anh

29 tháng 12 2019

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 from 43 to 50.

The need for a surgical operation, especially an emergency operation, almost always comes as a severe shock to the patient and his family. Despite modern advances, most people still have an irrational fear of hospitals and anaesthetics. Patients do riot often believe they really need surgery- cutting into a part of the body as opposed to treatment with drugs.

In the early year of the 20^th century, there was little specialization in surgery. A good surgeon was capable of performing almost every operation that had been advised up to that time. Today the situation is different. Operations are now being carried out that were not even dreamed of fifty years ago. The heart can be safely opened and its valves repaired. Cloyed blood vessels can be clean out, and broken ones mended and replaced. A lung, the whole stomach, or even part of the brain can be removed and still permit the patient to live a comfortable and satisfactory life. However, not every surgeon wants to, or is qualified to carry out every type of modern operation.

The scope of surgery has increase remarkable in the past decades. Its safety has increased, too. Deaths from most operations are about 20% of what they were in 1910 and surgery has been extended in many directions, for example, to certain types of birth defects in new born babies, and at the other end of the scale, to life-saving operation for the octogenarian .The hospital stay after surgery has been shortened to as little as a week for most major operations. Most patients are out of bed on the day after an operation and may be back at work in two or three weeks.

One of the most revolutionary areas of modern surgery is that of organ transplants. Until a few decades ago, no person, except an identical twins, was able to accept into his body the tissues of another person without reacting against them and eventually killing them. Recently, however, it has been discovered that with the use of X-rays and special drugs, it is possible to graft tissues from one person to another which will survive for periods of a year or more. Kidneys have been successfully transplanted between non-identical twins. Heart and lung transplants have also been reasonably successful.

“Spare parts” surgery, the simple routine replacement of all worn-out organs by new ones, is still a dream of the future but surgery is ready for such miracles. In the meantime, you can be happy if the doctors say to you: “Yes, l think it is possible to operate on you for this condition”.

The word “clogged” is most likely to correspond to______.

A. clean

B. blocked

C. covered

D. unwashed

1

DH

Dương Hoàn Anh

29 tháng 12 2019

Đáp án B

Câu hỏi từ vựng.

Clogged: bị tắc, bị kẹt = B. blocked: bị gây cản trở.

Các đáp án còn lại:

A. clean (adj): sạch sẽ.

C. covered: bị bao phủ.

D. unwashed: không được gội rửa.

Tạm dịch: “Cloyed blood vessels can be clean out, and broken ones mended and replaced”- (Các mạch máu bị tắc nghẽn có thể được loại bỏ, và những mạch máu bị vỡ có thể được sửa chữa và thay thế).

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 following questions. In the history of technology, computers and calculators were innovative developments. They are essentially different from all other machines because they have a memory. This memory stores instructions and information. In a calculator, the instructions are the various functions of arithmetic, which are permanently remembered by the machine and cannot...

LQ

Lê Quỳnh Anh

2 tháng 10 2019

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 following questions.

In the history of technology, computers and calculators were innovative developments. They are essentially different from all other machines because they have a memory. This memory stores instructions and information. In a calculator, the instructions are the various functions of arithmetic, which are permanently remembered by the machine and cannot be altered or added to. The information consists of the numbers which are keyed in.

An electronic pocket calculator can perform almost instant arithmetic. A calculator requires an input unit to feed in numbers, a processing unit to make the calculation, a memory unit, and an output unit to display the result. The calculator is powered by a small battery or by a panel of solar cells. Inside is a microchip that contains the memory and processing units and also controls the input unit, which is the keyboard, and the output unit, which is the display.

The input unit has keys for numbers and operations. Beneath the key is a printed circuit board containing a set of contacts for each key. Pressing a key closes the contacts and sends a signal along a pair of lines in the circuit board to the processing unit, in which the binary code for that key is stored in the memory. The processing unit also sends the code to the display. Each key is connected by a different pair of lines to the processing unit, which repeatedly checks the lines to find out when a pair is linked by a key.

The memory unit stores the arithmetic instructions for the processing unit and holds the temporary results that occur during calculation. Storage cells in the memory unit hold the binary codes for the keys that have been pressed. The number codes, together with the operation code for the plus key, are held in temporary cells until the processing unit requires them.

When the equals key is pressed, it sends a signal to the processing unit. This takes the operation code - for example, addition - and the two numbers being held in the memory unit and performs the operation on the two numbers. After the addition is done, the result goes to the decoder in the calculator's microchip. This code is then sent to the liquid crystal display unit, which shows the result, or output, of the calculation.

What is the main purpose of the passage?

A. To summarize the history of technology

B. To explain how a calculator works

C. To discuss innovative developments in technology

D. To compare computers and calculators with other machines

1

DH

Dương Hoàn Anh

2 tháng 10 2019

Kiến thức: Đọc hiểu

Giải thích:

Mục đích chính của đoạn văn là gì?

A. Tóm tắt lịch sử công nghệ

B. Để giải thích cách hoạt động của máy tính

C. Để thảo luận về sự phát triển đột phá trong công nghệ

D. So sánh máy tính bỏ túi và máy tính với các loại máy móc khác

Xuyên suốt đoạn văn, tác giả liệt kê về các bộ phận của máy tính bỏ túi cũng như giải thích về chức năng của chúng. => Mục đích chính của đoạn văn là giải thích cách hoạt động của máy tính.

Chọn B