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

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

18、B

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

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

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科目:高中英语 来源:志鸿系列训练必修一英语北师版 北师版 题型:014

While working in the country, the students ________ a great deal of knowledge on plant life.

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用pick up的正确形式填空并推测其含义。

While working in the country, the students ________ a great deal of knowledge on plant life.

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