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最佳答案：amazing scientist
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最佳答案：it take quite a long time for the scientists to solve those problemsi am very in
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最佳答案：it's well known that Mrs.Curie is an excellent scientist.
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最佳答案：as a student,we should study the dedicated of scientist
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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：The scientist's argument has been tremendous supported by academia.
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最佳答案：1.Until recently,scientists have discovered an effective drug in the treatment o
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最佳答案：scientists are trying to make better use of solar energy in order to solve energ
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最佳答案：een used 20 centurisplaying made angry clean
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最佳答案：the existence of