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问题 选择题

对比下列几个式子：Cl+Cl→Cl2（放热247kJ），O+O→O2（放热493kJ）以及N+N→N2（放热946kJ）可以得出结论是[ ]

A．在常温下氮气比氧气和氯气稳定

B．氯气．氮气．氧气常温下为气体

C．在常温下氯气比氮气和氧气稳定

D．氯气．氮气．氧气的密度不同

答案

答案：A

填空题

根据句意及首字母提示在横线处填上恰当的单词，使句子意思完整，语法正确。

1.  My d_____ life has changed a lot since I went to middle school.

2.  I know your leg hurts. Just be p_____ and the doctor will arrive soon.

3.  It was carelessness that c_____ the traffic accident.

4.  Even t_____ the parents work very hard, they can't afford their son's university education.

5.  When we learn new words, we should pay more a_____ to how to use them well.

6.  Think it over before you make a big d_____.

7.  We shouldn't w_____ paper, because trees are becoming fewer and fewer.

8.  His pet dog's d_____ made him not feel like eating.
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多项选择题

对基金高管人员日常监管的手段主要有（）。

A．离任审计

B．持续教育制度

C．公示制度

D．谈话提醒制度
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