【題目】Besides good diet, Mr. Qu, a marathon runner, takes exercise every day to keep fit.

A. a; the B. \; a

C. \; \ D. a; \

【答案】D

【解析】句意：除了良好的飲食，馬拉松運動員瞿先生需要每天鍛煉以保持健康。diet日常飲食，規(guī)定飲食，是可數(shù)名詞，因此要前面加不定冠詞a；take exercise 鍛煉。故選D。

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