解析　句意为：该市每年将发放不超过1万张的新汽车牌照，借以限制汽车数量和改善环境。distribute分发，分配，符合句意。witness目击，见证；evaluate评估，评价；declare宣布。

5．-Why were you late for such an important concert?

-The plane arrived at the airport after a ________ of three hours.

A．delay B．rest C．tour D．request

答案　A

解析　上句询问迟到的原因，因此下句中的名词应与"迟到"意义有关，所以只能选择"延误"，即A项为正确答案。

6．They advocate the proposal we were opposed________ rediscussed at the next meeting.

A．to be B．should be

C．to was D．was

答案　A

解析　考查固定短语和虚拟语气。句意为：他们主张我们反对的那个提议应该在下次会议上重新讨论。be opposed to sth.为固定短语，由此可知此处首先需要补充完整，故排除B、D两项；再分析句子成分可知，advocate后的从句为宾语从句，需要用虚拟语气，即"(should＋)动词原形"，故A项正确。

7．She glanced ________ through the magazine as she was waiting for the bus.

A．casual B．casually C．serious D．seriously

答案　B

解析　句意为：她一边等公共汽车，一边漫不经心地翻着杂志。修饰动词短语，故用副词形式。casually漫不经心地，符合句意。

8．Under no circumstances ________ late for your party.

A．shall I be B．I shall be

C．I am D．am I

答案　A

解析　under no circumstances放在句首时，句子要用倒装语序，且根据句意知应用将来时态，故答案为A项。

9．The French Revolution was successful in ________ society of inequality，which had a great effect on many other countries，particularly those in Europe.