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China has         in producing clones of cows and goats, and continues to research ways          _______ can benefit mankind.

A.resulted ; that B.succeeded ; /
C.succeeded ; that D.resulted ; in which

A

解析試題分析:result in 結(jié)果是---,以---為結(jié)果;succeed in 在某方面取得成功。由后面的繼續(xù)研究可知,這只是階段性的結(jié)果,并非成功,故應(yīng)為result in。第二個(gè)空是定語(yǔ)從句,先行詞為ways,而定語(yǔ)從句缺少主語(yǔ),故應(yīng)為that,且不能省略。句意為:中國(guó)產(chǎn)生出了科隆牛和科隆羊,繼續(xù)研究有益于人類的方法。
考點(diǎn):考查短語(yǔ)及定從的用法。

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