答案：D
24.We will have to finish the job, .
A.long it takes however B.it takes however long
C.long however it takes D.however long it takes
解析：however是连接副词,意思是“不管怎么,不管多么”,引导一个让步状语从句。因为是副词,必须和形容词或副词连用,而且从句应用陈述语序。
答案：D
25.He sent me an e-mail, to get further information.
A.hoped B.hoping C.to hope D.hope
解析：此题考查v.-ing形式作伴随状语的情况,也就是说,sent 和hope两个动词是同时发生的。
答案：B
26.While building a tunnel through the mountains, .
A.an underground lake was discovered
B.there was an underground lake discovered
C.a lake was discovered underground
D.the workers discovered an underground lake
解析：v.-ing形式作状语时,v.-ing形式的逻辑主语必须与句子的主语保持一致。根据题意,只有workers才会发出building的动作。
答案：D
27.I am in a situation quite yours,also lack of experience.
A.different from B.similar to C.similar with D.familiar to
解析：根据also 排除表达情况相反的A选项,根据similar本身的用法,排除选项C。选项D的宾语应该是有思想的,而yours显然指代的是没有思想的situation,所以D项不对。
答案：B
28.Our bodies are strengthened by taking exercise. ,our minds are developed by learning.
A.Probably B.Likely C.Similarly D.Generally
解析：句中是将our minds 与our bodies 相类比。因此,应用“相似地,类似地”。
答案：C
29.Because of the large of population of this country,more and more farmland is being built on.
A.increase B.decrease C.increasing D.decreasing
解析：根据句意来看,此处应为“因为人口的大量增长”,所以首先排除B、D,根据结构来看,此处应用increase 的名词形式,the large increase of population,意为“人口的大量增加”。
答案：A
30.I’m not sure the professor will give us a lecture next Monday.
A.whether B.that C.which D.whenever
解析：根据句意可知此句为对“对……不肯定的”这一句型的考查。
答案：A
31.He always sleeps with the window .
A.opened B.open C.opening D.to open
解析：此句中的open作形容词用,表示“敞着的”,with＋sth.＋形容词（过去分词、现在分词）表示伴随或限定。这里作定语表示限定。
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