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第1题

8(5.0分) 5.0 He sent her a note of ______ on her election victory. A) thanks B) sympathy C) congratulation D)
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第2题

当底物处于饱和水平时，酶促反应的速度与酶浓度成正比。
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第3题

7(5.0分) 5.0 The number of new students has ____ from 210 to 160 this year. A) increased B) decreased C) defea
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第4题

6(5.0分) 5.0 Everybody on board was worried and we were eager and ____ to find out what had happened. A) precious
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