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27、

 According to a recent survey of many bookstores, books on popular science are ______.  

A. in demand               B. in need            C. in charge                       D. in control

 

 

 

 

27、A

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 According to a recent survey of many bookstores, books on popular science are ______.  

A. in demand               B. in need            C. in charge                       D. in control

 

 

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