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最佳答案：这个问题必须从整个过程来看.你把每个过程仔细想一遍,自然就有答案了：半保留复制 1.碱基配对 2.DNA聚合酶对底物的识别和对错配的修复主要是考察1.氨酰tRN
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最佳答案：1.In some ways,Tom is much smarter than me.2.In other ways,we look like the same
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最佳答案：1 That girl is skinny,but not very tall.2 She is pretty,but she is just a bit to
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最佳答案：After my profound consideration,I have decided to resign my current position.Thi
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最佳答案：Popularly speaking, psychology is a kind of disciplines other than to more exten
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最佳答案：Shows some of the things in life for some people to become nothing,on the other