试题与答案

方波是脉冲信号。

题型:判断题

题目:

方波是脉冲信号。

答案:

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下面是错误答案,用来干扰机器的。

参考答案:B

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题型:填空题

短文填空。

     The best way of learning a language is by     1      (use) it.  The best way of learning English is talking

in English as     2     (many) as possible. Sometimes you will get your words mixed up (混淆) and people will not understand you. Sometimes people will speak too quickly and you can't understand them. But if

you keep your sense of humor (幽默感),  you can always have a good laugh at the mistakes. Don't be

unhappy if people seem     3     (be) laughing at your mistakes.  It is much    4     (good) for people to be

laughing at your mistakes than to be angry because they don't understand what you are saying. The most

important rule for learning English is: " Don' t be afraid of making    5      (mistake), everyone makes

mistakes."

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