问题 判断题

GSM系统信道采用双频率工作,一个发射,一个接收,这种信道我们称之为双工信道,其收发频率间隔称之为双工间隔,GSM的双工间隔为200KHZ。

答案

参考答案:错

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  If you do not use your arms or your legs for some time, they become weak. When you 1using them again, they 2become strong again. Everybody knows this and nobody would think of 3 this fact. 4 there are many people who do not 5 to know that memory works in the 6 way.

  7someone says that he has a good memory; he8 means that he 9 his memory by practising exercising it. When someone 10 says that his memory is poor, he actually means that he 11 give it enough chances to become 12 .Have you ever 13 that people who cannot read or write usually have 14 memories than those who can? This is 15 those who 16 read or write 17 remember things. They have to remember dates, places, names, songs and stories. So their memory is the whole time 18 .So 19 you want to have a good memory, you should learn from those people, 20 by remembering what you see, hear, feel and write. If so, you must have a good memory.

  1. A. begin       B. go on     C. stop        D. continue

  2. A. quickly     B. slowly     C. soon       D. at once

  3. A. doing      B. agreeing    C. questioning  D. answering

  4. A. Yet        B. Still       C. So         D. Certainly

  5. A. want       B. seem      C. get         D. hope

  6. A. other       B. usual      C. same        D. opposite

  7. A. As         B. What      C. While       D. When

  8. A. real        B. actually    C. true        D. then

  9. A. wants      B. builds up    C. makes      D. keeps

  10.A.again      B. else         C. more       D. once

  11.A.do not     B. is not        C. never       D. does not

  12.A.poor       B. weak        C. strong      D. healthy

  13.A.seen       B. heard of      C. noticed     D. thought of

  14.A.worse      B. better       C. more        D. less

  15.A.why        B. how       C. because      D. the reason

  16.A.used to     B. cannot      C. try to        D. have to

  17.A.will not     B. have to      C. refuse      D. cannot

  18.A.ready       B. being used   C. busy       D. training

  19.A.if          B. that        C. though      D. thus

20.A.please      B. try          C. train       D. enjoy

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