【題目】My grandfather is in his eighties, ______he is still in good health.

A. or B. but C. so D. For

【答案】B

【解析】試題分析：句意：我的爺爺80來歲了，但他仍然很健康。A. or 否則；B. But但是；C. so 因此； D. For為了，根據(jù)句意此空表示轉(zhuǎn)折，所以用連詞but，故選B。

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