【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(dòng)詞短語(yǔ)。句意：細(xì)胞是重要的，因?yàn)樗鼈兪怯薪M織的結(jié)構(gòu)，幫助生物進(jìn)行生命的活動(dòng)。A. carry on繼續(xù)，參與；B. expand on詳述；C. put on穿上，上演；D. hang on堅(jiān)持下去。故選A。

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