At a beach or a swimming pool a lifeguard is a person who is responsible for ___
题型：不详难度：来源：
At a beach or a swimming pool a lifeguard is a person who is responsible for __________ other swimmers and protecting them from accidents. | A．turning to | B．watching over | C．watching out | D．digging out |
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答案
| B |
解析
| 短语辨析。A. 转向 B.看守；照管C.小心；提防 D.掘出；发现。句意：在海边或者游泳池，救生员是一个负责照管他人，防止他们出现事故的一个人。故选B。 |
举一反三
The English in the future will be quite different from the English of today. It is possible that some English words may even ________ completely.| A．die down | B．die out | C．die off | D．die of |
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—Who telephoned you just now?
— don’t know. I was about to answer the phone when it ________.| A．rang up | B．rang off | C．hung on | D．rang back |
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The fact that many college graduates get lower pay than some workers has ______ a heated discussion.| A．set out | B．set about | C．set up | D．set off |
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In spite of the great difficulties, Helen Keller ______ studying and finally succeeded. | A．stuck to | B．kept up with | C．kept on | D．insisted on |
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—What’s wrong with your ipad? The sound is not clear.
—Yes. It has been broken for some time.| A．come out | B．coming out | C．to come out | D．came out |
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