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题型：单选题题类：常考题难易度：普通

黑龙江省大庆实验中学2017-2018学年高一下学期英语期末考试试卷

While working in the countryside, the students ______ a great deal of knowledge on plant life.

A、looked up B、picked up C、put up D、called up

举一反三

I've been trying to phone Charles all evening, but there must be something wrong with the network; I can't seem to_____.

After he had been hit by many hardships and failures, the young man _____ at last.

Our headmaster will __________us in the discussion this afternoon.

To keep healthy, Professor Johnson ______ cycling as a regular form of exercise after he retired.

Most consumers are by the high price of the 3D printers despite keen interest in them.

用本单元出现的单词或短语的正确形式替换画线部分，保持句意不变。

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