Recent studies have shown that air inside many homes, office buildings, and schools is full of pollutants such as ().
A、chemicals
B、smoke
C、bacteria
D、perfume

单项选择题They claim that （）1,000 factories closed down during theeconomic crisis.

A. increasingly
B. approximately
C. considerably
D.incredibly

单项选择题At first _______ I thought it was a dog but I was mistaken.A. impressionB. glanceC. assumptionD. instance

单项选择题To _______ the profit should not be the only purpose of a company.A. maintainB. stimulateC. maximizeD. stir

未分类题Which is not the reason for the startling of the visiting teacher in an Asian country?A、The students were too noisy and naughty.B、The art teacher was too strict.C、The teaching methods were very different from the ways of teaching in her own country.D、She feels uncomfortable in the new place.

单项选择题It is essential that everything in advance.A.should dwcideB.be decidedC.decidedD.will be decided

单项选择题What he said was so complicated that I _________ after the first couple ofsentences.A) kept trackB) lost trackC) signed upD) fell into

单项选择题The plan for a new office tower went ahead ______ local citizens ’ opposition.A) regardless ofB) in regardC) with regard toD) in spite

单项选择题The economic crises in that country have _______ the stability of thegovernment.A. threatenedB. testifiedC. thrivedD. healed

单项选择题Humans can easily _______ the emotional expressions of chimpanzees.A) cooperate withB) identify withC) meet withD) gowith

单项选择题I think it ’s time to _______ a different strategy in my dealingswith him.A) adaptB) adoptC) defineD) decline

单项选择题加速第一次世界大战结束的最重要的因素是：（）A.交战国国内革命运动的发展B.美国加入协约国对德作战C.日德兰海战德国海军惨败D.意大利态度转变退出同盟国

单项选择题下列有关“一战”对政治格局的影响，不正确的是：（）A.欧洲世界霸主地位发生动摇B.社会主义制度在世界出现C.亚洲民族解放运动高涨D.美国成为资本主义世界霸主

单项选择题“一战”的最大后果是：（）A.社会主义的苏联建立B.欧洲霸权发生了严重动摇C.无产阶级革命运动高涨D.以欧洲为中心的政治格局发生转移

单项选择题______ care whether they have passed the entrance examination or not.A. Does he littleC. Little he doesB. Does little heD. Little does he

单项选择题第二国际大多数政党在一战爆发后倒向本国政府一边的原因是：（）A.恩格斯逝世B.无政府主义思潮的影响C.修正主义思潮的影响D.各国垄断资产阶级的引诱