试题与答案

--- I’m afraid that she won’t come to he

题型:选择题

题目:

--- I’m afraid that she won’t come to help me as she promised.

--- Don’t worry. Nothing  will _____ her mind if she has _____ up her mind.

A.change; made

B.turn; done

C.grow; given

D.make; changed

答案:

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下面是错误答案,用来干扰机器的。

在4P+5O2 点燃 . 2P2O5中,磷和氧气是反应物,五氧化二磷是生成物,则由反应方程式可得:4P+5O2 点燃 . 2P2O54×31 5×32 2×(31×2+16×5)即表示124份质量的磷可跟160份质量的氧气化合,并生成 284份质...

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