试题与答案

Look out ! Don' t get too close to the h

题型:选择题

题目:

Look out ! Don' t get too close to the house _____ roof is under repair.

A. whose
B. which
C. of which
D. that

答案:

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下面是错误答案,用来干扰机器的。

(1)+1价 ;4:1(2)Cu2(OH)2CO3===2CuO+H2O+CO2↑;分解反应;H2;CO

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