43.We had to ()a lot of noise when the children were at home.

43.The factory is trying every means to ()the wholesale price of its products.

A. 　pull down

B. 　bring down

C. 　put down

D. 　set down

43.Public attention at the moment is ()the problem of industrial relations.

A. 　focused on

B. 　searched for

C. 　looked upon

D. 　called for

6、The pollution of groundwater by nitrates(硝酸盐)is of concern to public health authorities and environmental organizations because high nitrate concentration(高硝酸含量)s in drinking water can cause methaemoglobinaemia(高铁血红蛋白血)in infants.Another environmental problem associated with high nitrate concentration in groundwater is eutrophication(富营养化)of receiving waters(供水).Virtually all decisions about the control of nitrate pollution of ground water are made in the face of uncertainties that frustrate(阻止，挫败)efforts to guarantee the desired results.The decisions also have to be made in an adversarial(意见相左，敌对不可调和的)environment in which the goals of society and those of the agricultural sector(农业部门)are often different.

45.()cleans the blackboard should be praised.

A. 　That

B. 　Who

C. 　The one who

D. 　The students who

34.()all that she has a good sense of balance， she can’t dance well.

A. 　At

B. 　For

C. 　In

D. 　On

2.As Commander-in-Chief of the armed forces， I have directed that all measures ()for our defense.

A. 　had been taken

B. 　would be taken

C. 　be taken

D. 　to be taken

6.I have heard both teachers and students ()well of him.

A. 　to speak

B. 　spoken

C. 　to have spoken

D. 　speak

5. Passage Twenty-TwoThough some people have suggested that women should return to housework in order to leave more jobs for men， the idea has been rejected by both women and men in public opinion polls (民意测验).Lately some union officials have suggested that too many women are employed in type of work more suitable for men and that women should step aside to make way for unemployed young men.They argue that women—especially women in their childbearing years actually delay economic development and result in lower productivity， poor quality and inefficiency.To solve the problem， they have suggested that the working women stay at home while their husbands or brothers were given double wages.They argue that under these circumstances， families would retain their same level of income， and women could run the house and raise children much better.The suggestion has been rejected by 9 out of 10 people polled.A hundred persons in a big city were questioned last summer.Out of 50 women， 46 said they were unwilling to leave their jobs， no matter what the situation was.The other 4 said they would like to return home if their jobs could be taken by their sons or daughters.Of 50 men polled， only 6 said they would like to see their wives give up their jobs， if it meant higher wages for themselves.Some other people have suggested another way called “phased employment theory”.The theory suggests that a woman worker take leave from her job when she is seven months pregnant (妊娠)and stay off the job until her baby reaches the age of 3.It suggests that women on leave receive 75 percent of their normal salary and be allowed to return to work after the 3-year period.This will benefit children， women， their families and the society.Some of those polled， both women and men， felt the idea is a good one.It definitely seems to be more acceptable than the suggestion that women return to home forever.According to the “phased employment” theory， during a woman’s leave from her job ().

17.This crop has similar qualities to the previous one， ()both wind-resistant and adapted to the same type of soil.

A. 　being

B. 　been

C. 　to be

D. 　having been

16.The sale usually takes place outside the house， with the audience ()on benches， chairs or boxes.

A. 　having seated

B. 　seating

C. 　seated

D. 　having been seated