单选题{{B}}Passage Four{{/B}} Faith in medicine runs deep in America. We spend more per person on health care than any other nation. Whether we eat too much or exercise too little, whether we're turning gray or feeling blue, we look to some pill or procedure to make us better. We assume that devoting ever more dollars to medicine will bring us longer, healthier lives. But there is mounting evidence that each new dollar we devote to the current health care system brings small and diminishing returns to public health. Today the United States spends more than $4 500 per person per year on health care. Costa Rica spends less than $ 300. Yet life expectancy at birth is nearly identical in both countries. Despite the highly publicized" longevity revolution," life expectancy among the elderly in the United States is hardly improving. Yes, we are an aging society, but primarily because of falling birthrates. Younger Americans, meanwhile, are far more likely to be disabled than they were 20 years ago. Most affected are people in their thirties, whose disability rates increased by nearly 130 percent, due primarily to overweight. Why has our huge investment in health care left us so unhealthy? Partly it is because so many promised" miracle cures," from Interferon to gene therapies, have proven to be ineffective or even dangerous. Partly it's because health care dollars are so concentrated on the terminally ill and the very old that even when medical interventions "work,'" the gains to average life expectancy are small. And partly it is because of medical errors and adverse reaction to prescription drugs, which cause more deaths than motor vehicle accidents, breast cancer or AIDS. Each year roughly 200 000 seniors suffer fatal or life-threatening "adverse drug events" due to improper drug use or drug interaction. Why don't Americans live any longer than Costa Ricans? Overwhelmingly, it's because of differences in behavior. Americans exercise less, eat more, drive more, smoke more, and lead more socially isolated lives. Even at its best, modern medicine can do little to promote productive aging, because by the time most people come in contact with it their bodies are already compromised by stress, indulgent habits, environmental dangers and injuries.

单选题He believed that the greatest of his ______ was that he had never had a college education.

单选题To be a good teacher, you need some of the gifts of a good actor: you must be able to 21 the attention and interest of your students; you must be a 22 speaker, with a good, strong, 23 voice which is fully under your control; and you must be able to 24 what you are teaching in order to make its meaning clear. 25 a good teacher and you will see that he does not sit still 26 his class; he stands the whole time when he is teaching; he walks about, using his 27 , hands and fingers to help him in his explanations, and his face to express feelings. Listen to him, and you will 28 the loudness, the quality and the musical note of his voice always 29 according to what he is 30 about. The fact that a good teacher has some of the gifts of a good actor doesn"t 31 that he will indeed be able to act 32 on the stage, for there are very important 33 between the teacher"s work and the actor"s. The actor has to speak words which he has learnt by heart; he has to repeat exactly the 34 words each time he plays a certain part; 35 his movements and the ways in which he uses his voice are usually 36 beforehand. What he has to do is to make all these carefully learnt words and actions seem 37 on the stage. A good teacher 38 in quite a different way. His students take an active part in his 39 ; they ask and answer questions; they obey orders; and if they don"t understand something, they will say no. The teacher therefore has to suit his act to the needs of his students. He cannot learn his part by heart, but must 40 it as he goes along.

单选题We argued that the sickness or crisis of capitalism was not at heart a technical matter, but a lack of legitimacy with ______ to the system itself. A.respect B.concern C.accordance D.pertinence

单选题What is the reason for the demonstrations in the streets of big Chinese cities?

单选题Until the constitution is ______, the power to appoint ministers will remain with the president. A. corrected B. amended C. remedied D. revised

单选题What has troubled many families in the United States?

单选题Passenger ships and ______ are often equipped with ship-to-shore or air-to-land radio telephones. A. aircrafts B. aircraft C. the planes D. also the planes

单选题Her trouble was found to be ______, not physical.A. mentalB. materialC. madD. mentally

单选题She has a small machine for______coffee beans.

单选题The energy ______ by the chain reaction is transformed into heat. [A] transferred [B] released [C] delivered [D] conveyed

单选题I ______ talk that way if I were Peter.

单选题Questions 32 to 35 are based on the following passage． 　 A national survey showed that many of America’s public school teachers spend their own time expanding the knowledge and skins．Professional training is a way of life for many teachers．Some even go to summer schools to learn new skills and keep up with advances in technology． The average teacher has 25 years of classroom experience and mole than half hold a master's degree．Nearly 23 percent began full?time teaching within the past five years．This statistic should cause some concerns because it means a large number of teachers are reaching the retirement age．If this trend is not recognized，at some point this will result in an experience gap． With salaries based on fewer hours and no overtime，the complaints of the teachers become more understandable．Many outsiders feel that the long summer vacations justify lower pay scales，but in reality，many teachers spend a good part of their vocation honing their skills for the upcoming year．Facing a classroom unprepared is tougher on the teacher than on students． Even with all of these，three fifths of teachers(60 percent)said they would become teachers again．However，there were many who said they would not choose teaching as a career if they could start over again． 　For the first time，the survey sought the reasons for teachers leaving the profession．The most often cited reason(37 percent)for abandoning their training and professional experience was low salaries．Minority teachers(50 percent)，male teachers(43 percent)，and teachers under 30(47 percent)were most likely to claim low pay as the reason they will not stay in teaching．

单选题As a ______ actor, he can perform, sing, dance and play several kinds of musical instruments. A. flexible B. versatile C. sophisticated D. productive

单选题Edie: I think Professor Holt is smart and she's really a good teacher. Rosa: OK. I'll try to get into her class. Edie: ______! A. You can't miss it B. Forget it C. Mind you D. You won't be sorry

单选题Based on this passage, over-learning is good because ______.