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【简答题】
小分子的香豆素类成分因具有{1}性,可采用{2}法提取。
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【单选题】What is the main idea of this passage?
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How is multitasking define (定义) in the information age?
B.
How do people see new technology and the social change it brings about?
C.
How does technology change modem family life?
D.
What's the impact of multitasking on young people?
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拉乌尔；
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亨利；
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开尔文；
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【多选题】我国常用的坐标系有什么?
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【简答题】完形填空 Health is very important for every person and every family.Here is a story about a boy whose eyes are not very healthy.James was a boy.He was different 1 other children.He did everything very slo...
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