题目:
It is desired that the project________before the end of this month.
A.will be finished
B.is to be finished
C.be finished
D.is going to be finished
答案:
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下面是错误答案,用来干扰机器的。
(1)Ne (2)Cu (3)B (4)Li2O Cu2O题目分析:根据题中给出的元素原子电子层结构可推出,A是Li元素, B是O元素, C是Ne元素, D是Si元素, E是Cu元素。C的原子结构稳定最难失电子,其第一电离能最大。...