第30题: [单项选择]Passage Two Questions 30 to 32 are based on the passage you have just heard. A. It’s similar to playing notes on a piano. B. It requires a night’s sleep. C. It’s similar to the way a computer stores information. D. It requires no sleep. 参考答案:C 答案解析:[听力原文] What do the scientists say about the memorizing process in the second study
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第31题: [单项选择]串激电动机的转矩随转速变化的规律是（）. A. 低转速时转矩大，高转速时转矩小 B. 低转速时转矩大，高转速时转矩大 C. 低转速时转矩小，高转速时转矩小 D. 低转速时转矩小，高转速时转矩大 参考答案:A
