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30 tháng 4 2018

bài 1 :

a hour , a house , a hen , a honor

bài 2 bay gio khong co dau chị dùng dau cross = N  ; con dau k : Y nhe

N ketY handN land border
Y dogN subtractN eighteen
Read the following passage and decide if it is T or F.   Energy is one of the problems that many people are interested in. It is not an unfamiliar word. It is heard, said, discussed day after day. It is close to everyone’s daily life. You turn on a lamp and it is energy that gives you light. You turn on a TV and it is energy that gives you pictures and sound. You ride a motorcycle and it is energy that gives you movement. You cook your meals and it is energy that gives you heat to boil...
Đọc tiếp

Read the following passage and decide if it is T or F.

   Energy is one of the problems that many people are interested in. It is not an unfamiliar word. It is heard, said, discussed day after day. It is close to everyone’s daily life. You turn on a lamp and it is energy that gives you light. You turn on a TV and it is energy that gives you pictures and sound. You ride a motorcycle and it is energy that gives you movement. You cook your meals and it is energy that gives you heat to boil rice.

   The problem is that the demand for energy is rising and that the price of energy is getting higher and higher. The supply of energy on earth is limited. It cannot provide us forever. The shortage of energy in the future is inevitable. Therefore, saving energy is a must if we want to continue to live in a safe and sound world.

* Notice:

   familiar: thân thuộc

   demand: nhu cầu

   inevitable: chắc chắn xảy ra

___ If we want to continue to live in a safe and sound world, we have to save energy.

1
21 tháng 11 2017

Đáp án: T

27 tháng 8 2023

1. We lit a fire, which son dried out our clothes. (X)
Corrected: We lit a fire, which dried out our clothes.

2. The report which son should have taken an hour and a half, took three hours. (√)
3. The children who I was looking after were terribly spoilt. (√)

4. She thanked him for the kind help that she received. (X)

The relative pronoun "that" cannot be deleted in this sentence, so a cross (X) is appropriate.

5. There wasn't any directory in the telephone box from which I was phoning. (√)

6. The man who was driving us didn't know the way. (√)

7. The Smiths, whose house was destroyed in the explosion, were given rooms in the hotel. (√)

8. The car which we hired from the airport broke down on the road. (√)

9. My boss, who I really wanted to see, was too busy to meet anyone. (X)

The relative pronoun "who" cannot be deleted in this sentence, so a cross (X) is appropriate.

10. Mr. and Mrs. Jones, who were out playing cards, knew nothing of the burglary. (√)

 

1: a

2: an

3: the

4: the

5; a

an

HQ
Hà Quang Minh
Giáo viên
14 tháng 10 2023

1. If I see a dog, I will run away.

(Nếu tôi nhìn thấy một con chó, tôi sẽ bỏ chạy.)

2. Does your town have an art gallery?

(Thị trấn của bạn có một phòng trưng bày nghệ thuật không?)

3. The Moon is bright tonight.

(Đêm nay trăng sáng.)

4. There is a big temple in the town. The temple is very old.

(Có một ngôi đền lớn trong thị trấn. Ngôi đền rất cổ.)

5. - Is your mother a teacher? - No, she isn't. She's an artist.

(Mẹ bạn có phải là giáo viên không? - - Không. Mẹ mình là một nghệ sĩ.)

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following questions. Sound moves form its source to the ear by wavelike fluctuations in air pressure, something like the crests and troughs of ocean waves. Once way to keep from hearing sound is to use ear plugs. Another way is to cancel out the sound with anti-sound. Using a noisemarker controlled by a microprocessor, engineers have produced sound waves that are half a...
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 the following questions.

Sound moves form its source to the ear by wavelike fluctuations in air pressure, something like the crests and troughs of ocean waves. Once way to keep from hearing sound is to use ear plugs. Another way is to cancel out the sound with anti-sound. Using a noisemarker controlled by a microprocessor, engineers have produced sound waves that are half a wavelength out of phase with those of the noise to be quieted-each crest is matched to a trough, and vice versa. Once the researchers have recorded the offending sound, a microprocessor calculates the amplitude and wavelength of sound that will cancel out the crests and troughs of noise. It then produces an electric current that is amplified and fed to a loudspeaker, which produces anti-sound and wipes out the noise. If the anti-sound goes out of synchronization, a microphone picks up the leftover sound and sends it back to the microprocessor, which changes the phase of the anti- sound just enough to cause complete silence.

The research team has concentrated on eliminating low-frequency noise from ship engines, which causes fatigue that can impair the efficiency and alertness of the crew, and may mask the warning sounds of alarm and fog signals.

The passage discusses a way to deal with an offensive noise by_________.

A. diverting people's attention from it

B. masking it with a louder noise 

C. canceling it out electronically 

D. removing its source

1
23 tháng 3 2019

Đáp án C

Thông tin ở câu thứ 2 và 3 của đoạn đầu tiên: One way to keep from hearing sound is to use ear plugs. Another way is to cancel out the sound with anti-sound. (Một cách để cách âm là sử dụng nút tai. Một cách nữa là triệt tiêu âm thanh với dụng cụ chống âm)

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following questions. Sound moves form its source to the ear by wavelike fluctuations in air pressure, something like the crests and troughs of ocean waves. Once way to keep from hearing sound is to use ear plugs. Another way is to cancel out the sound with anti-sound. Using a noisemarker controlled by a microprocessor, engineers have produced sound waves that are half a...
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 the following questions.

Sound moves form its source to the ear by wavelike fluctuations in air pressure, something like the crests and troughs of ocean waves. Once way to keep from hearing sound is to use ear plugs. Another way is to cancel out the sound with anti-sound. Using a noisemarker controlled by a microprocessor, engineers have produced sound waves that are half a wavelength out of phase with those of the noise to be quieted-each crest is matched to a trough, and vice versa. Once the researchers have recorded the offending sound, a microprocessor calculates the amplitude and wavelength of sound that will cancel out the crests and troughs of noise. It then produces an electric current that is amplified and fed to a loudspeaker, which produces anti-sound and wipes out the noise. If the anti-sound goes out of synchronization, a microphone picks up the leftover sound and sends it back to the microprocessor, which changes the phase of the anti- sound just enough to cause complete silence.

The research team has concentrated on eliminating low-frequency noise from ship engines, which causes fatigue that can impair the efficiency and alertness of the crew, and may mask the warning sounds of alarm and fog signals.

The researcher mentioned in the passage are concerned about unwanted noise because it can_________.

A. cause deafness 

B. create hazardous working conditions 

C. influence ocean waves 

D. damage loudspeakers and sound equipment

1
10 tháng 9 2019

Đáp án B

Thông tin ở câu cuối: … which causes fatigue that can impair the efficiency and alertness of the crew, and may mask the warning sounds of alarm and fog signals.

(những âm thanh không mong muốn có thể gây mệt mỏi, ảnh hưởng đến năng suất và sự tỉnh táo của phi hành đoàn, và có thể che mất âm thanh cảnh báo và tín hiệu bão => tạo ra tình trạng làm việc nguy hiểm)

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following questions. Sound moves form its source to the ear by wavelike fluctuations in air pressure, something like the crests and troughs of ocean waves. Once way to keep from hearing sound is to use ear plugs. Another way is to cancel out the sound with anti-sound. Using a noisemarker controlled by a microprocessor, engineers have produced sound waves that are half a...
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 the following questions.

Sound moves form its source to the ear by wavelike fluctuations in air pressure, something like the crests and troughs of ocean waves. Once way to keep from hearing sound is to use ear plugs. Another way is to cancel out the sound with anti-sound. Using a noisemarker controlled by a microprocessor, engineers have produced sound waves that are half a wavelength out of phase with those of the noise to be quieted-each crest is matched to a trough, and vice versa. Once the researchers have recorded the offending sound, a microprocessor calculates the amplitude and wavelength of sound that will cancel out the crests and troughs of noise. It then produces an electric current that is amplified and fed to a loudspeaker, which produces anti-sound and wipes out the noise. If the anti-sound goes out of synchronization, a microphone picks up the leftover sound and sends it back to the microprocessor, which changes the phase of the anti- sound just enough to cause complete silence.

The research team has concentrated on eliminating low-frequency noise from ship engines, which causes fatigue that can impair the efficiency and alertness of the crew, and may mask the warning sounds of alarm and fog signals.

The microprocessor described in the passage will probably be used for_________.

A. composing music 

B. repairing alarm systems

C. eliminating engine noises 

D. intensifying for warning sounds

1
2 tháng 12 2017

Đáp án C

Thông tin ở đoạn 1: Using a noisemarker controlled by a microprocessor, engineers have produced sound waves that are half a wavelength out of phase with those of the noise to be quieted-each crest is matched to a trough, and vice versa. Once the researchers have recorded the offending sound, a microprocessor calculates the amplitude and wavelength of sound that will cancel out the crests and troughs of noise. It then produces an electric current that is amplified and fed to a loudspeaker, which produces anti-sound and wipes out the noise.

=> microprocessor (bộ vi xử lý) được dùng để loại bỏ âm thanh

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following questions. Sound moves form its source to the ear by wavelike fluctuations in air pressure, something like the crests and troughs of ocean waves. Once way to keep from hearing sound is to use ear plugs. Another way is to cancel out the sound with anti-sound. Using a noisemarker controlled by a microprocessor, engineers have produced sound waves that are half a...
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 the following questions.

Sound moves form its source to the ear by wavelike fluctuations in air pressure, something like the crests and troughs of ocean waves. Once way to keep from hearing sound is to use ear plugs. Another way is to cancel out the sound with anti-sound. Using a noisemarker controlled by a microprocessor, engineers have produced sound waves that are half a wavelength out of phase with those of the noise to be quieted-each crest is matched to a trough, and vice versa. Once the researchers have recorded the offending sound, a microprocessor calculates the amplitude and wavelength of sound that will cancel out the crests and troughs of noise. It then produces an electric current that is amplified and fed to a loudspeaker, which produces anti-sound and wipes out the noise. If the anti-sound goes out of synchronization, a microphone picks up the leftover sound and sends it back to the microprocessor, which changes the phase of the anti- sound just enough to cause complete silence.

The research team has concentrated on eliminating low-frequency noise from ship engines, which causes fatigue that can impair the efficiency and alertness of the crew, and may mask the warning sounds of alarm and fog signals.

The passage compares sound to_________.

A. the rising and falling of water in the ocean 

B. the crests and valleys of mountain ranges 

C. a flag waving in the air 

D. a machine for gauging air pressure 

1
30 tháng 3 2017

Đáp án A

Thông tin ở câu đầu tiên của bài đọc: Sound moves form its source to the ear by wavelike fluctuations in air pressure, something like the crests and troughs of ocean waves. (Âm thanh di chuyển hình thành nguồn gốc của nó trong tai bởi biến động trong áp suất không khí, một cái gì đó giống như các đỉnh và đáy của sóng biển.)

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following questions. Sound moves form its source to the ear by wavelike fluctuations in air pressure, something like the crests and troughs of ocean waves. Once way to keep from hearing sound is to use ear plugs. Another way is to cancel out the sound with anti-sound. Using a noisemarker controlled by a microprocessor, engineers have produced sound waves that are half a...
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 the following questions.

Sound moves form its source to the ear by wavelike fluctuations in air pressure, something like the crests and troughs of ocean waves. Once way to keep from hearing sound is to use ear plugs. Another way is to cancel out the sound with anti-sound. Using a noisemarker controlled by a microprocessor, engineers have produced sound waves that are half a wavelength out of phase with those of the noise to be quieted-each crest is matched to a trough, and vice versa. Once the researchers have recorded the offending sound, a microprocessor calculates the amplitude and wavelength of sound that will cancel out the crests and troughs of noise. It then produces an electric current that is amplified and fed to a loudspeaker, which produces anti-sound and wipes out the noise. If the anti-sound goes out of synchronization, a microphone picks up the leftover sound and sends it back to the microprocessor, which changes the phase of the anti- sound just enough to cause complete silence.

The research team has concentrated on eliminating low-frequency noise from ship engines, which causes fatigue that can impair the efficiency and alertness of the crew, and may mask the warning sounds of alarm and fog signals.

What is the main purpose of the passage?

A. To discuss a physical handicap

B. To warn about a growing danger 

C. To describe the structure of the ear 

D. To report on a new invention 

1
31 tháng 1 2017

Đáp án D

Mục đích của bài này là To report on a new invention (Giới thiệu một phát minh mới). Phát minh đó là sử dụng bộ vi xử lý (a microprocessor) để loại bỏ các âm thanh không mong muốn