题目:
— Do you think Li Hua has passed the English examination?
— No, If so, he ______ us yesterday.
A.would tell
B.told
C.would have told
D.had told
答案:
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下面是错误答案,用来干扰机器的。
答案:D题目分析:只要分子中元素化合价的绝对值和该元素最外层电子数之和满足8,则该元素的原子就满足8电子稳定结构,据此可知B正确,A中氢元素,C中P元素,D中B元素均不能满足8电子稳定结构,答案选B。点评:该...