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    Người gửi: Đỗ Văn Bình (trang riêng)
    Ngày gửi: 09h:21' 17-09-2017
    Dung lượng: 46.0 KB
    Số lượt tải: 27
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    SỞ GD&ĐT VĨNH PHÚC
    TRƯỜNG THPT LIỄN SƠN
    (Đề thi gồm: 04 trang)
    ĐỀ KTCL ÔN THI THPT QUỐC GIA NĂM 2017
    Môn: TIẾNG ANH – ĐỀ SỐ 152
    Thời gian làm bài: 60 phút, không kể thời gian phát đề
    
    
    Họ và tên thí sinh:…………………………………………………………………….SBD:…………………………

    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.

    Question 1. 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
    Question 2. 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
    Question 3. 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
    Question 4. 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
    Question 5. 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
    Question 6. According to the passage, what group of people will probably first from the use of the microprocessor?
    A. Ship`s crews B. Research engineers C. People with insomnia D. Engine repair teams
    Question 7. A paragraph following the passage would most probably discuss_________.
    A. the nature of fog B. a way to improve alarm systems
    C. other causes of fatigue D. other uses for the microprocessor

    Mark the letter A, B, C, or D to indicate the sentence that is closest in meaning to each of the following questions.
    Question 8:Right after Helen went out for tea, David came by her house.
    A No sooner had Helen went out for tea then David came by her house.
    B Hardly had Helen went out for tea than David came by her house.
    C No sooner had Helen went out for tea when David came by her house.
    D Hardly had Helen gone out for tea when David came by her house.
    Question 9: She said, “John, I’ll show you round my city when you’re here.”
    A. She made a trip round her city with John. B. She promised to show John round her city.
    C. She planned to show John round her city. D. She organized a trip round her city for John.
    Question 10: It is expected that tax increases will be announced in tomorrow’s budget.
    A. Tax increases are expected to be announced in tomorrow’s budget.
    B. They expected that tax will be increased in tomorrow’s budget.
    C. Tax increases is expected to announced in tomorrow’s budget.
    D. They expect that tax increases are announced in tomorrow’s budget

    Mark the letter A, B, C, or D to indicate the sentence that best combines each pair of sentences in the following questions.
    Question 11: He felt very tired. However, he was determined to continue to climb up the mountain. A. He felt so tired that he was determined to continue to climb up the mountain. B. Feeling very tired, he was
     
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