4. Passage One There are three separate sources of danger in supplying energy by nuclear power. First， the radioactive material must travel from its place of production to the power station. Although the power stations themselves are strongly built， the containers used for the transport of the materials are not. Normally， only two methods of transport are in use， namely road or rail. Unfortunately， both of these may have an effect on the general public， since they are sure to pass near， or even through， heavily populated areas. Second， there is the problem of waste. All nuclear power stations produce wastes that in most cases will remain radioactive for thousands of years. It is impossible to make these wastes nonradioactive， so they must be stored in one of the inconvenient ways that scientists have invented. For example， they may be buried under the ground， or dropped into deserted mines， or sunk in the sea. However， these methods do not solve the problem， since an earthquake could easily break the containers.
Third， there may occur the danger of a leak or an explosion at the power station. Compared with the other two dangers， this is not very likely， so it does not provide a serious objection to the nuclear program. However， it can happen. Separately， these three types of dangers are not a great cause for worry. Taken together， though， the probability of disaster is extremely high. What is this passage about?

43. I fell down and broke three of my teeth. I wonder how many times I have to come here and get my false teeth (_____)_.

A. 　 fix

B. 　 fixing

C. 　 fixed

D. 　 to fix

38. He failed to supply the facts relevant (_____)_ the case i question.

A. 　 for

B. 　 with

C. 　 to

D. 　 of

3. Passage Four Did your mum and dad go to university， or did they leave school and go straight to the Job Centre? The educational experience of parents is still important when it comes to how today’s students choose an area of study and what to do after graduation， according to the Future-track research in the UK. The research was done by the Higher Education Careers Service Unit. It plans to follow university applicants for six years from 2006 through their early careers. The first year’s findings come from a study of 130，000 university applicants. They show significant differences in prospective students’ approach to higher education， depending on whether their parents got degrees 【second-generation applicants】 or didn’t 【first-generation applicants】. First-generation applicants were more likely to say that their career and employment prospects were uppermost in their minds in deciding to go to university. About one-fifth of this group gave “to enable me to get a good job” as their main reason for choosing high education. And 37 percent said that a degree was “part of my career plan” . A young person coming from a non-professional household where finances are stretched may find the idea of learning for its own sake to be a luxury. This explains the explosion in vocational course. At Portsmouth University， first-year student Kim Burnett， 19， says that she specifically chose her degree in health research management and psychology to get a secure， well-paid job. Harriet Edge， 20， studying medicine at Manchester University， also wanted job security. Her parents lacked college degrees， though the fact that her uncle is a doctor appears to have influenced her choice. “Medicine is one of those fields where it’s pretty likely you’ll get a job at the end. That’s a big plus， as the debt levels after five years of study are going to be frightening，” she says. Many experts believe that this situation affects those with no family tradition of higher education far more keenly. The fact that 26 percent of respondents said that they needed more advice implies that some students may end up feeling that their higher education investment was not worthwhile. For those with graduate parents， this lack of guidance may， the researchers suggest， be less of a problem. “But， for those without the advantages， lack of access to career guidance before applying for higher education leaves them exposed to making poorer choices，” the survey concludes. In which of the following aspects do Kim Burnett and Harriet Edge have in common?

A. They both chose their majors because of their family influence.

B. They are both the first-year students in university.

C. Both of their parents lack college degrees.

D. Both of them chose degrees for job security.

3. Passage Thirteen Trees are useful to man in three important ways: they provide him with wood and other products; they give him shade; and they help to prevent droughts and floods. Unfortunately， in many parts of the world， man has not realized that the third of these services is the most important. In his eagerness to make money from trees， he has cut them down in large numbers， only to find that without them he has lost the best friends he had. And besides， he is usually too careless to plant and look after new trees. So the forests slowly disappear. This does not only mean that man will have fewer trees. The results are even more serious: for where there are trees， their roots break up soil——allowing the rain to sink in——and also bind the soil， thus preventing it from being washed away easily; but where there are no trees， the rain falls on hard ground and flows away， causing floods and carrying away the rich top-soil. When all the top-soil is gone， nothing remains but worthless desert. Two thousand years ago a rich and powerful country cut down its trees to build warships， with which to gain itself an empire. It set up the empire but， without its trees， its soil became poor and it grew weak. When the empire fell to pieces， the home country found itself faced with floods and starvation.Why did the country mentioned in the passage suffer from floods and starvation?

A. Because an empire was set up.

B. Because the empire fell to pieces.

C. Because it lost its trees.

D. Because too much had been spent on wars.

35. You don’t have to pay for your flights: they’re (_____)_ in the price of your holiday.

A. 　 concluded

B. 　 held

C. 　 settled

D. 　 included

46. Very few people understood his lecture, the subject of (_____) was hard.

A. 　 what

B. 　 it

C. 　 which

D. 　 that

46. Ann never dreams of (_____)_ for her to be sent abroad very soon.

A. 　 there being a chance

B. 　 there to be a chance

C. 　 there be a chance

D. 　 being a chance

48. It wasn’t until nearly a month later () I received the manager’s reply.

A. 　 since

B. 　 when

C. 　 as

D. 　 that

45. (_____)_ cleans the blackboard should be praised.

A. 　 That

B. 　 Who

C. 　 The one who

D. 　 The students who

4. Passage Eight Wisdom teeth are normally the last teeth to appear. This usually happens when people are in their late teen years or early twenties—in other words， when they are older and wiser. Wisdom teeth are chewing teeth， at the back of the mouth. They can grow into place normally and never cause a problem. But often there is not enough room for them in the mouth. They might crowd other teeth. Sometimes they even push sideways through the gums (牙床). An impacted wisdom tooth is one that fails to completely rise through the gum—the term is 【erupt】. Wisdom teeth that only partially erupt can leave space for bacteria to enter around the tooth. Infection is a risk in these cases. Wisdom teeth that are not well in place and become impacted are often removed. People should have the placement of their wisdom teeth examined between the ages of sixteen and twenty. X-rays can show wisdom teeth that are below the gums. The American Dental Association says removal is generally advised when wisdom teeth only partly break through the gums. Removal is also advised if there is a chance that poorly placed wisdom teeth will damage other teeth. And removal is called for in cases where fluid collects around a wisdom tooth that is partly or fully below the gum. But why do we have wisdom teeth if we often need to get them removed? One theory has to do with our diets. Scientists say the diet of prehistoric humans probably required more chewing teeth. Life was probably alittle rougher on the teeth back then， too. So it was good to have extras. The American Association of Oral and Maxillofacial (上颌面的) Surgeons says young adults are the best candidates for wisdom teeth removal. The group says older patients may be at greater risk for disease in the tissue surrounding the teeth. After surgery， there can be swelling of the gums and face and some pain. Both can be treated with cold wraps and medication (药物治疗). Humans have wisdom teeth probably because ( ) .

A. our ancestors needed to chew more when they grew up

B. our ancestors’ teeth grew at late teens or early twenties

C. our ancestors ate foods without cooking

D. our ancestors had very tough lives