题目

The world is ________ seven continents and four oceans.A. made up of B. made out ofC. made from D. made in 答案:【答案】A【解析】句意:世界由七大洲和四大洋组成。be made up of由……组成;be made out of由……制成;be made from 由……材料制成;be made in在某地制造。B,C,D答案都含有“制造”之意,而本题含有“组成”之意,故答案为A。德国物理学家爱因斯坦经过多年的研究,打破了传统的绝对时空观提出了A.自由落体定律B.万有引力定律C.进化论D.相对论
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