题目:
She got stuck in a terrible traffic jam on the highway to Shanghai,or
she dinner with her family now.
A.will be having
B.would be having
C.is having
D.was having
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:根据题干X原子核内没有中子,说明X是H,Z与Y、W均相邻,最外层电子数之和为17,说明这三种元素不可能是同周期或同主族元素,否则最外层电子数之和可以被3整除,说明Z与其中一种元素同主族相邻,...