断裂一个给定的键时所消耗的能量称为离解能，根据下列烷烃的C—H键的离解能

下列判断不正确的是                                                                                          （   ）

A．离解能愈小，C—H键易断裂，氢原子越易被取代

B．在光照条件下丙烷与氯气发生取代反应CH₃CH₂CH₂Cl与CH₃CHClCH₃物质的量之比为1∶1

C．异丁烷与氯气发生取代反应，占一氯代物的物质的量分数大于10%

D．C₂H₆中C－H的离解能介于410.0kJ/mol～435.1kJ/mol。

短文首字母填空

I read an article about London in a m   小题1:   yesterday.

London is one of the c   小题2:   with a long history in Britain. It is also the biggest  city in Europe. You can find some of the best theatres of the world there, such as the National Theatre, the National Gallery(画廊) and so on. You may visit many places of i   小题3:  there. Most of the old and f  小题4:  buildings are on the n  小题5:  bank of the River Thames. On the south bank, there are some fine modern  buildings.

If you want to know the people there better, you should learn more about the history and the culture as well.