【題目】Cells are important because they are organized structures that help living thing the activities of life.

A. carry on B. expand on

C. put on D. hang on

【答案】A

【解析】A考查動詞短語。句意：細胞是重要的，因為它們是有組織的結(jié)構(gòu)，幫助生物進行生命的活動。A. carry on繼續(xù)，參與；B. expand on詳述；C. put on穿上，上演；D. hang on堅持下去。故選A。

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