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26 tháng 2 2018

Đáp án là A. A thunder => thunder, Thunder : sấm, là danh từ không đếm được, nên không dùng mạo từ “a”

9 tháng 1 2017

Chọn C                                 Câu đề bài: “Mặc dù sấm và sét được tạo ra cùng một lúc, sóng ánh sáng đi xa hơn___________, vì vậy chúng ta thấy sét trước khi chúng ta nghe thấy sấm ".

Đáp án C: than sound waves do

—» Đây là cách nói rút gọn của “than sound waves travel”: cấu trúc so sánh hơn kém:

S + V + trạng từ ngắn đuôi er/dài thêm more + than + S + V.

15 tháng 3 2019

Đáp án A

Giải thích: Khi so sánh, vế sau than phải dùng đúng cấu trúc như về trước (ví dụ He drives faster than I drive/ He is taller than I am), tuy nhiên có thể tránh lặp bằng cách thay động từ bằng trợ động từ tương ứng, to be thì giữ nguyên.

Dịch nghĩa: Mặc dù sấm và chớp được tạo ra cùng một lúc, nhưng sóng ánh sáng đi nhanh hơn sóng âm thanh nên ta nhìn thấy chớp trước khi nghe thấy sấm.

9 tháng 1 2019

Chọn C

Câu đề bài: “Mặc dù sấm và sét được tạo ra cùng một lúc, sóng ánh sáng đi xa hơn___________, vì vậy chúng ta thấy sét trước khi chúng ta nghe thấy sấm ".

Đáp án C: than sound waves do

—» Đây là cách nói rút gọn của “than sound waves travel”: cấu trúc so sánh hơn kém:

S + V + trạng từ ngắn đuôi er/dài thêm more + than + S + V.

26 tháng 3 2018

Đáp án A So sánh hơn của trạng từ ngắn (fast): S + V + adv-er + than + S + do/does

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 questionsThree mile island nuclear power plantAmerica’s worst accident at a civilian nuclear power plant occurred on March 28, 1979, at Three Mile Island. Operators were trying to repair a problem with piping in the water circulation system, and they accidentally blocked the flow of water. This stopped the removal of heat from the reactor, and began a series of events...
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

Three mile island nuclear power plant

America’s worst accident at a civilian nuclear power plant occurred on March 28, 1979, at Three Mile Island. Operators were trying to repair a problem with piping in the water circulation system, and they accidentally blocked the flow of water. This stopped the removal of heat from the reactor, and began a series of events that would change the way America thought about nuclear power.

Within ten seconds after the flow of water was blocked, the reactor vessel became hotter and the pressure rose. Safety control rods were automatically thrust down into the reactor, causing the chain reaction to stop completely. Pressure, however, continued to build. A relief valve opened but failed to close. As a result, too much water escaped, and the reactor began to melt down.

[1] Large quantities of radioactivity began to leak from the reactor. [2] Most of the radioactivity was contained, and it is likely that no one received a harmful amount of radiation. [3] “Three Mile Island” became the reason that many Americans are afraid of nuclear power to this day. [4]

According to the passage, how was the chain reaction stopped at Three Mile Island?

A.  By a built-in safety device


 

B.  By the plant operators


 

C. By the loss of fuel


 

D. By water flooding the plant


 

1
15 tháng 7 2019

Đáp án là A.

Bởi một thiết bị an toàn được xây dựng trong

Chi tiết trong bài: Safety control rods were automatically thrust down into the reactor, causing the chain reaction to stop completely.

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 questionsThree mile island nuclear power plantAmerica’s worst accident at a civilian nuclear power plant occurred on March 28, 1979, at Three Mile Island. Operators were trying to repair a problem with piping in the water circulation system, and they accidentally blocked the flow of water. This stopped the removal of heat from the reactor, and began a series of events...
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

Three mile island nuclear power plant

America’s worst accident at a civilian nuclear power plant occurred on March 28, 1979, at Three Mile Island. Operators were trying to repair a problem with piping in the water circulation system, and they accidentally blocked the flow of water. This stopped the removal of heat from the reactor, and began a series of events that would change the way America thought about nuclear power.

Within ten seconds after the flow of water was blocked, the reactor vessel became hotter and the pressure rose. Safety control rods were automatically thrust down into the reactor, causing the chain reaction to stop completely. Pressure, however, continued to build. A relief valve opened but failed to close. As a result, too much water escaped, and the reactor began to melt down.

[1] Large quantities of radioactivity began to leak from the reactor. [2] Most of the radioactivity was contained, and it is likely that no one received a harmful amount of radiation. [3] “Three Mile Island” became the reason that many Americans are afraid of nuclear power to this day. [4]

Where did the first problem occur at Three Mile Island?

A. In the control rods


 

B.  In the reactor vessel


 

C. In the water circulation system


 

D. In the reactor’s core


 

1
3 tháng 1 2020

Đáp án là C.

Ý trong bài: Operators were trying to repair a problem with piping in the water circulation system, and they accidentally blocked the flow of water.

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 questionsThree mile island nuclear power plantAmerica’s worst accident at a civilian nuclear power plant occurred on March 28, 1979, at Three Mile Island. Operators were trying to repair a problem with piping in the water circulation system, and they accidentally blocked the flow of water. This stopped the removal of heat from the reactor, and began a series of events...
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

Three mile island nuclear power plant

America’s worst accident at a civilian nuclear power plant occurred on March 28, 1979, at Three Mile Island. Operators were trying to repair a problem with piping in the water circulation system, and they accidentally blocked the flow of water. This stopped the removal of heat from the reactor, and began a series of events that would change the way America thought about nuclear power.

Within ten seconds after the flow of water was blocked, the reactor vessel became hotter and the pressure rose. Safety control rods were automatically thrust down into the reactor, causing the chain reaction to stop completely. Pressure, however, continued to build. A relief valve opened but failed to close. As a result, too much water escaped, and the reactor began to melt down.

[1] Large quantities of radioactivity began to leak from the reactor. [2] Most of the radioactivity was contained, and it is likely that no one received a harmful amount of radiation. [3] “Three Mile Island” became the reason that many Americans are afraid of nuclear power to this day. [4]

Which is the best place for the following sentence?

“ Even so, this disaster stayed in the minds of many Americans.”

A. [1]

B. [2]

C. [3]

D. [4]

1
12 tháng 9 2019

Đáp án là C

“ Even so, this disaster stayed in the minds of many Americans.” - "Mặc dù vậy, thảm họa này ở lại trong tâm trí của nhiều người Mỹ."

C. Thay thế cho câu 3: “Three Mile Island” became the reason that many Americans are afraid of nuclear power to this day. - "Three Mile Island" đã trở thành lý do mà nhiều người Mỹ sợ điện hạt nhân cho đến ngày nay.

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 questionsThree mile island nuclear power plantAmerica’s worst accident at a civilian nuclear power plant occurred on March 28, 1979, at Three Mile Island. Operators were trying to repair a problem with piping in the water circulation system, and they accidentally blocked the flow of water. This stopped the removal of heat from the reactor, and began a series of events...
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

Three mile island nuclear power plant

America’s worst accident at a civilian nuclear power plant occurred on March 28, 1979, at Three Mile Island. Operators were trying to repair a problem with piping in the water circulation system, and they accidentally blocked the flow of water. This stopped the removal of heat from the reactor, and began a series of events that would change the way America thought about nuclear power.

Within ten seconds after the flow of water was blocked, the reactor vessel became hotter and the pressure rose. Safety control rods were automatically thrust down into the reactor, causing the chain reaction to stop completely. Pressure, however, continued to build. A relief valve opened but failed to close. As a result, too much water escaped, and the reactor began to melt down.

[1] Large quantities of radioactivity began to leak from the reactor. [2] Most of the radioactivity was contained, and it is likely that no one received a harmful amount of radiation. [3] “Three Mile Island” became the reason that many Americans are afraid of nuclear power to this day. [4]

which word refers to the part of a nuclear reactor in which the nuclear reaction takes place?

A. Vessel


 

B. Core


 

C. Circulation system


 

D. Control rods


 

1
15 tháng 11 2019

Đáp án là B.

Core: nòng cốt . Có thể dựa vào câu hỏi 48 để chọn đáp án cho câu hỏi này.

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 questionsThree mile island nuclear power plantAmerica’s worst accident at a civilian nuclear power plant occurred on March 28, 1979, at Three Mile Island. Operators were trying to repair a problem with piping in the water circulation system, and they accidentally blocked the flow of water. This stopped the removal of heat from the reactor, and began a series of events...
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

Three mile island nuclear power plant

America’s worst accident at a civilian nuclear power plant occurred on March 28, 1979, at Three Mile Island. Operators were trying to repair a problem with piping in the water circulation system, and they accidentally blocked the flow of water. This stopped the removal of heat from the reactor, and began a series of events that would change the way America thought about nuclear power.

Within ten seconds after the flow of water was blocked, the reactor vessel became hotter and the pressure rose. Safety control rods were automatically thrust down into the reactor, causing the chain reaction to stop completely. Pressure, however, continued to build. A relief valve opened but failed to close. As a result, too much water escaped, and the reactor began to melt down.

[1] Large quantities of radioactivity began to leak from the reactor. [2] Most of the radioactivity was contained, and it is likely that no one received a harmful amount of radiation. [3] “Three Mile Island” became the reason that many Americans are afraid of nuclear power to this day. [4]

It can be inferred that removing heat from a reactor is important because

A. It keeps pressure low enough to avoid accidents


 

B. It keeps the reactor producing energy


 

C. It stops a chain reaction


 

D. It stops radioactivity from leaking out of the reactor 


 

1
17 tháng 1 2018

Đáp án là A.

Nó giữ áp suất thấp, đủ để tránh tai nạn.

Tìm hiểu ý đoan 3 sẽ trả lời được câu này: Đoạn 3 nói về hậu quả của việc “stopping the removal of heat from the reactor” đó là : the reactor vessel became hotter and the pressure rose. ... A relief valve opened butfailed to close. As a result, too much water escaped, and the reactor began to melt down. => Từ đó có thể suy ra được vai trò của “removing heat from a reactor”