According to the last paragraph, "the test of time is the hardest of all to pass" suggests that ______.

A . accusation. B . enthusiasm. C . indifference. D . tolerance.

What people are "self-absorbed" (line 6, para. 1 ) according to the writer？ A．Those who want to meet other Cubans. B．Those who are interested in themselves. C．Those who like to lunch in noisy restaurants. D．Those who are brave enough to face themselves.

The biggest increase will occur at private colleges. Public colleges, heavily subsidized by rax funds, will also【24】their tuition, but the increase will be a few percentage points【25】than their privately sponsored neighbors. As a follow-up, the United Press international did their own study【26】Massachussetts Institute of Technology. At M. I. T. advisors recommended that students have $ 8,900【27】for one year's expenses, including $ 5,300 for tuition, $ 2,685 for room and【28】, $ 630 for personal expenses, and $ 285 for books and supplies. Ten years ago the tuition was only $ 2,150. To【29】that another way, the cost has climbed 150 percent in the last【30】. (61) A．published B．declared C．written D．quoted

A．Efforts should be exerted on pollution prevention instead of on remedial measures. B．More money should be spent in order to stop pollution. C．Ordinary citizens have no access to technical information on pollution. D．Environmental degradation will be stopped by the end of this decade.

The word "they" in "together they threaten to confuse"(Line 3, Para. 5) refers to________ A．engineering and the liberal arts B．reality and noble ideals C．flexibility and a value system D．practicality and rationality

The "last barrier"(Para. 3) mentioned in Melano's e-mail refers to A．the old culture of curiosity. B．lack of direct communication. C．racial and cultural relations. D．the differences between people.

A．When the manager called the shelter, there was a volunteer there. B．Both the manager and the congregation were very kind. C．The new liberary happened to become a new shelter. D．The books the manager donated were what women were expecting. 此题为多项选择题。

A．$ 10 million B．$ 47. 4 million C．no statistics available D．nearly a 3 percent increase

A．Habit can be harmful to the development of mankind B．People usually like to taste new things at the risk of their lives C．Most people hesitate to eat new things they have never tasted before D．People are usually willing to try a new food if it is offered by a friend

Research on the benefits of an extremely low-calorie diet【C2】______back to the 1930s, when scientists found that rats lived【C3】______to twice as long when they ate less than control animals. And how about in human？ To fill that【C4】______, scientist Agnes and her colleagues at the University of Muenster【C5】______50 healthy elderly subjects. The【C6】______volunteer was 60 years old and overweight. The researchers【C7】______assigned the volunteers to one of three groups. Twenty people were instructed to reduce their daily calorie【C8】______by 30%, while still eating a【C9】______diet. Another 20 were told to keep their calorie intake the same but increase their【C10】______of unsaturated(不饱和的 )fatty acids. The【C11】______10 volunteers did not change their diets. After 3 months, all of the volunteers【C12】______a memory test in which they were shown 15 words and asked how many they could remember after 30 minutes.【C13】______average,those in the calorie-restriction group showed a 20%【C14】______over their baseline memory scores taken before they started their diets. Subjects in the other two groups showed【C15】______or no improvement. "Our study【C16】______provides some of the first【C17】______on the impact of calorie restriction on memory in the elderly, but this study has to be【C18】______up now," Floel noted. Her team plans to【C19】______larger studies to determine exactly【C20】______calorie restriction enhances memory. 【C1】 A．reducing B．declining C．burning D．increasing

A．the misunderstanding of science B．the scientific explanation C．the money needed in scientific research D．the curiosity of scientists

A．government"s job to curb unhealthy consumption is fulfilled B．government"s job to relieve the tax burden of British people is fulfilled C．government"s job to advocate public health campaign is fulfilled D．government"s job to elevate the moral level of British people is fulfilled

A．Nowadays, scientists pictured the circulation of ocean's water mass as consisting of large slow-moving currents. B．Before 1965 ,the concept of scientists produced only a rough approximation of the true circulation. C．Researchers began to do research on the developed techniques and equipment. D．These instruments disclosed an expected level of variability in the deep ocean.

A．The waters are salty. B．The waters are not very salty. C．The salinity is decreasing. D．The sea water is becoming less and less.

A．The amount of Vitamin D intake for the author"s first child is a half of that for her third child. B．The author"s new born baby was taking Vitamin D pills. C．Sunshine can help produce Vitamin D. D．The author"s second child did not have any Vitamin D supplement when born.

A．get ready for the worst result of things B．enjoy the process of things C．expect little from life D．find the relationship between cause and effect