题目

—How are you getting on with your business?  —I’m glad to say it is _____. A. turning up      B. picking up      C. breaking up      D. taking up 答案:B 解析: pick up 恢复,有好转。在此喻指生意兴隆起来。一种声光报警器的电路如图所示,各元件均能正常工作,对可能出现的现象描述正确的是( )A.灯亮,铃一定响B.铃响,灯一定亮C.灯亮,铃一定不响D.铃响,灯一定不亮
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