【題目】The findings support another study which showed that being happy ______ reduce the risk of heart disease.

A. need B. shall C. must D. can

【答案】D

【解析】

試題分析:考查情態(tài)動(dòng)詞。句意:這個(gè)發(fā)現(xiàn)支持了另一項(xiàng)研究:快樂可以降低心臟病的風(fēng)險(xiǎn)。Need需要;shall將,會(huì);must必須;can可能,可以;根據(jù)句意,選D項(xiàng)。

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