2017年職稱英語理工類B級(jí)考試試題庫:閱讀判斷

字號(hào):

第2部分:閱讀判斷(第16——22題,每題1分,共7分)
    下面的短文后,列出了7個(gè)句子,請(qǐng)根據(jù)短文的內(nèi)容對(duì)每個(gè)句子作出判斷:如果該句提供的是正確信息,請(qǐng)選擇A;如果該句提供的是錯(cuò)誤信息,請(qǐng)選擇B;如果該句的信息文中沒有提及,請(qǐng)選擇C。
    The Speed Sound
    Solids transmit (傳遞) sound very well. Try holding a wooden stick against part of a machine, and place your ears against the stick. The movement of the ball-bearing (滾珠軸承) can be clearly heard. This is a good way of finding the exact source of trouble in a motor-car engine which sounds as if it is wrong and yet gives no information of where the trouble is.
    It is probably a good thing that sound cannot travel through a vacuum, for we are thus limited to earth-made sounds. The violent disturbances which are seen occasionally in the sun, for example, may affect our magnetism and our radio; they do not affect our ears, which is a very good thing for our peace of mind.
    If we have used our eyes and ears, we may have realized that sound takes time to travel through the air. The sound of thunder nearly always follow the lightning flash although they happen at exactly the same time. And the appearance of white cloud above a distant ship or train tells us, before anything is heard, that its whistle has sounded. Just how fast does sound travel through the air?
    The speed of sound in the air at ordinary temperature is about 1,100 feet per second, which is about one mile in five seconds or about 700 miles per hour. The speed of sound increases slightly with a rise in temperature and falls with a decrease in temperature. It is not affected by the pressure of the air.
    16.“How Fast Sound Travels” can replace the original title of the passage.
    A.Right
    B.Wrong
    C.Not Mentioned
    17.We never hear anything that happens on the sun because of the distance between the earth and the sun.
    A.Right
    B.Wrong
    C.Not Mentioned
    18.The sound of thunder always follows the lightning flash because the sound of thunder travels more slowly through the air.
    A.Right
    B.Wrong
    C.Not Mentioned
    19.The research of sound is important to us.
    A.Right
    B.Wrong
    C.Not Mentioned
    20.The speed at which sound travel through the air at ordinary temperature is about 1,100 feet per minute.
    A.Right
    B.Wrong
    C.Not Mentioned
    21.Our eyes are keener than our ears.
    A.Right
    B.Wrong
    C.Not Mentioned
    22.The speed of sound increases with a rise in temperature.
    A.Right
    B.Wrong
    C.Not Mentioned