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题目
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Chinese scientists have produced an embryo of a giant panda through cloning technology,_____ is a breakthrough ______ could save the endangered animals.
A.that; whichB.which; thatC.which; whatD.that; what

答案
B
解析

试题分析: 句意:科学家已经通过克隆技术复制出大熊猫的胚胎,这是能够拯救濒危动物的一项突破。第一空填which,引导非限制性定语从句,指代前面的内容,that不能引导非限制性定语从句,第二空填that修饰breakthrough,在定语从句中做主语,所以选B。
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试题【Chinese scientists have produced an embryo of a giant panda through cloning tech】;主要考察你对句法等知识点的理解。[详细]
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