161.(2004全国)-The window is dirty.

-I know.It ______ for weeks.

A.hasn’t cleaned

B.didn’t clean

C.wasn’t cleaned

D.hasn’t been cleaned

简析：选D。根据时间状语for weeks可确定用现在完成时，表示“已经有好几周没擦窗户了”。

160.(2004全国)Sarah,hurry up.I’m afraid you won’t have time to ______ before the party.

A.get changed

B.get change

C.get changing

D.get to change

简析：选A。get后接过去分词表示状态的改变。

159.(2003上海)One of the consequences of our planet’s being warming up is a(n) ______ in the numbers of natural disasters.

A.result

B.account

C.reason

D.increase

简析：选D。result “结果”；account “理由”；reason “理由，原因”；increase “增长”。根据句意可知，D项为最佳答案。

158.(2003全国)Don’t be afraid of asking for help ______ it is needed.

A.unless

B.since

C.although

D.when

简析：选D。此处的具体语境是向对方提出要求，后一句应该是表达出“凡是需要时”之意，故D项为最佳答案。

157.(2004北京春)

He was in hospital for six months.He felt as if he was______from the outside world.

A.cut out　　　　 B.cut off　　　　　　　　　 C.cut up　　　　　 D.cut through

简析：选B。cut out“切掉，裁剪出”；cut off“断绝，使隔绝”；cut up“切碎”；cut through“抄近路，凿穿”。该句意为：他在医院呆了六个月，觉得好像与外界隔绝了似的。可见B为最佳答案。

156.(2004北京)______in the queue for half an hour,Tom suddenly realized that he had left his wallet at home.

A.To wait　　　　　　　　　　　　　　　　 B.Have waited

C.Having waited　　　　　　 　　　　　　　D.To have waited

简析：选C。本题考查非谓语动词的用法。作时间状语应该用现在分词；又因“wait”发生在“realize”之前，应用完成式。

155.(2004湖南)You were silly not______your car.

A.to lock　　　　　　　　　　　　　　　 B.to have locked

C.locking　　　　　　　　　　　　　 　　D.having hocked

简析：选B。根据句意：没有锁车，你真是太傻了。锁车动作发生在太傻之前，故用不定式的完成式。

154.(2004浙江)The winter of 1990 was extremely bad.______most people say it was the worst winter of their lives.

A.At last　　　　 B.In fact　　　　　 　　　C.In a word　　　　　　　 D.As a result

简析：选B。at last“最后、终于”；in a word“简而言之”；as a result“结果是……”。根据题意选B，意为“实际上”。

153.(2004江苏)The man insisted______a taxi for me even though I told him I lived nearby.

A.find　　　　　 B.to find　　　　　　　 C.on finding　　　　　　 D.in finding

简析：选C。本题考查动词短语的用法。insist on是一个动词短语，on为介词，所以

选C。

152.(2004上海)The first use of atomic weapons was in 1945,and their power______increased enormously ever since.

A.is　　　　　　　 B.was　　　　　　　　 C.has been　　　　　 D.had been

简析：选C。本题考查动词时态用法。因句中有时间状语ever since,故应用现在完成时。