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英语单项选择(请附上详细解析)

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英语单项选择(请附上详细解析)
1,The precious manuscripts were hopelessly ( ) by long exposure in the cold,damp cellar.
a,ruined b,damaged c,destroued d,harmed
2,The board of the company has decided to ( ) its operation to include all aspects of the clothing bussiness.
a,extend b,enlarge c,expand d,amplify
3,happen,take place 的区别
4,The work is not very profitable ( ) cash ,but I am getting valuable experience from it.
a,in the light of b,according to c,on the basis of d,in terms of
5,The wealth of a country should be measured ( ) the health and happiness of its people as well as the material goods it can produce.
a,in line with b,in terms of c,in regard with d,bu means of
6,At the meeting ,Smith argued ( ) in favor of the proposal.
a,severely b,warmly c,forcefully d,heavily
7,Every chemical change either results from energy being sued to produce the change,or causes energy to be ( )in some form .
a,given off b,put out c,set off d,used up
1.b 物理上的损坏
2.a 延伸到
3.take place 表示“发生、举行、举办”,一般指非偶然性事件的“发生”,即这种事件的发生一定有某种原因或事先的安排,happen作“发生、碰巧”解,一般用于偶然或突发性事件.
4.d就.而言
5.d 通过.手段
6.c有力地
7.a释放