不同烷烃脱氢和断链的难易,一般规律是同碳原子数的烷烃,C-H键能大于C-C键能,故断链比脱氢()。
A、容易
B、较难
C、同等难易
D、不确定
参考答案:A
Examples of people____ by lightning more than five times are almost common. [ ]
A. striking
B. to be struck
C. being struck
D. struck