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最佳答案：The structure of the change is like a sword with two blades.For example,the inve
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最佳答案：Many scientists believe that it's human's activities that make our earth get war
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最佳答案：Safety engineering studies various accidents during human productions and activi
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最佳答案：我写的答案很详细,因为格式问题发不上来,我把它转成文件通过问问中转站 发给你了,你采纳了我的答案,然后点击确定接收文件就能收到..
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最佳答案：With the development of science and technology,computers and Internet will becom
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最佳答案：1、正如科学家所预言的那样,全球污染成了人类面临的最严重的问题之一.（global）Just as the scientists conjectured,the
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最佳答案：1,Edison was born in 1847 inthe United States of America,and died in 1931.He is
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最佳答案：As scientists predicted that global pollution has become one of the most serious
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最佳答案：The not coetaneous culture construction is different, therefore appearing the di
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最佳答案：Whether we can land on Mars depends entirely on the development of science and t