--What do you know about the population of China? --It _____ over 1,200 million and 80 percent of it _____ peasants.A.is; isB.are; areC.are; isD.is; are
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D解析population作为整体作主语时，谓语动词用单数形式，如果就其中某部分而言，谓语动词用复数形式，也就是说出现分数、百分数修饰名词，那么谓语动词的单复数形式要根据名词的形式和意义来决定，如Two thirds of the books are about science. 而Two thirds of the book has been finished.