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There was great public interest when a big hole mysteriously appeared in the middle of a field. Army mechanics and engineers were called in to explain how it had got there. They orrered various explanations but were not at all sure how the hole had’been caused. It was thought that a large shell which must have lain buried under the ground for many years had suddenly exploded, but it was not possible to prove this.
A “simple", but highly improbable, explanation was offered by a man who claims to be especially well-informed about "flying saucers —the strange objects which are round in shape and are said to visit the earth occasionally from outer space. The man’s explanation may have been nonsense, but at least it was imaginative. At any rate, it was far more interesting than the one given by the army.
After examing the ground carefully, the man claimed to have seen special marks on the soil quite near the hole. These, he said, could only have been caused by a flying saucer. Moreover, the leaves on some bushes nearby had turned yellow because of a strange hot gas which had come from the saucer just before it landed. Even a small tree some way off appeared to have been burnt slightly. A small piece of metal found in the hole itself provided further proof that a strange object had been there. According to the man, it was quite clear that people from another world had been circling the earth trying to pick up information, when something had gone wrong. Because of this they had been forced to land in a field so that the damage could be repaired. The hole had been caused when the saucer struck the earth, while the strange marks nearby were made when it took off again. This, said the man, was the simplest explanation of how the hole had appeared. Judging from the interest the public took in the matter, there must be quite a few people who secretly believe or hope that this "simple" explanation is the true one.

A:utterly infeasible B:lacking in imagination C:more probable than the one offered by the army D:creative though not necessarily reasonable

A library with 5000 books ______ to the school as a gift.

A:is offered B:has offered C:are offered D:have offered

Do you know insurance(保险) Buying insurance is a (56) by which people can protect themselves (57) large losses. Protection against fire is one kind of insurance. Large numbers of people pay (58) sums of money (59) an insurance company. Although thousands of people have paid for fire insurance, only (60) will lose their homes by fire. The insurance company will pay for these homes (61) of the sums of money it has collected.
The first modem fire insurance company was (62) in London, England, in 1666. A great fire had just (63) most of the city, and people wanted to protect against (64) losses. The fire company grew rapidly. (65) , other companies were founded in other areas.
Benjamin Franklin helped form the first fire insurance company in America in 1752. He also (66) a new kind of insurance for (67) . The new insurance would offer protection against the loss of crops (68) storm.
In 1759, Benjamin Franklin helped start (69) new insurance. This company, which offered (70) insurance, colleccted some money (71) from different men. Although a man died, his family was given a large sum of money. Today, this company is (72) in business.
Over the years, people have (73) from many new kinds of insurance when they have suffered from (74) accidents as car, plane crashes. Tomorrow, almost everyone has (75) kind Of insurance.

A:heard B:paid C:benefited D:offered

A library with five thousand books ______ to the nation as a gift.

A:is offered B:has offered C:are offered D:have offered

A:heard B:paid C:benefited D:offered

　Health Insurance(保险) 　　Most Americans are responsible for their own medical costs.These can be extremely high if a person gets very(51)or has an accident.So people buy a health insurance plan to make sure these costs will be(52). 　　Most American colleges and universities have(53)health centers.There may even be a teaching hospital that can treat more serious(54). 　　Some medical services may be included in the cost of attending a school.But health insurance is usually needed for extra services.(55)most full-time college students must have insurance. 　　Students may already be protected under their family’s health plan.If not,many colleges offer(56)own plans. 　　The University of Michigan will be our example.Students pay a health service fee.Then there is no extra charge when they are treated for minor(57)problems at the University Health Center.But the school wants students to have health insurance to pay(58)other services. 　　The insurance plan(59)by the university costs about one thousand seven hundred dollars a year.Such health insurance(60)generally pay for hospital services,emergency room care and visits to doctors.They(61)do not pay for care of the teeth.And they usually do not pay for treatment of medical conditions that existed(62)the student arrived at school. 　　International students at the University of Michigan have two(63).They can buy the university health plan.Or they can(64)private insurance that is approved by the university. 　　The school also offers a special International Student Insurance Plan.This pays for most of the services offered(65)the University Health Center that are not included in the health service fee.

A:taken B:taught C:offered D:accepted

下面的短文有15处空白，请根据短文的内容为每处确定1个最佳选项。

Health Insurance (保险)
Most Americans are responsible for their own medical costs. These can be extremely high if a person gets very (1) or has an accident. So people buy a health insurance plan to make sure these costs will be (2).
Most American colleges and universities have (3) health centers. There may even be a teaching hospital that can treat more serious (4).
Some medical services may be included in the cost of attending a school. But health insurance is usually needed for extra services. (5) most full-time college students must have insurance.
Students may already be protected under their family’s health plan. If not, many colleges offer (6) own plans.
The University of Michigan will be our example. Students pay a health service fee. Then there is no extra charge when they are treated for minor (7) problems at the University Health Center. But the school wants students to have health insurance to pay (8) other services.
The insurance plan (9) by the university costs about one thousand seven hundred dollars a year. Such health insurance (10) generally pay for hospital services, emergency room care and visits to doctors. They (11) do not pay for care of the teeth. And they usually do not pay for treatment of medical conditions that existed (12) the student arrived at school.
International students at the University of Michigan have two (13) .
They can buy the university health plan. Or they can (14) private insurance that is approved by the university.
The school also offers a special International Student Insurance Plan. This pays for most of the services offered (15) the University Health Center that are not included in the health service fee.

A:taken B:taught C:offered D:accepted