单选题The professor's lecture was so ______ that some of the students fell asleep during the class. A. disturbing B. boring C. upsetting D. bothering

单选题The potential of closed-circuit television and other electronic teaching tools is so great that it is inspiring to imagine "the school of tomorrow". Televised lesson will be given in a central building having perhaps four or five master studios. The lesson will be carried out into classrooms all over a city, or even an entire country. After a televised lesson has been given, the classroom teacher will take over for the allimportant "follow-up" period. The students will ask any troublesome questions, and difficult points will be cleared up through discussion. The teacher in the classroom will have additional electronic tools. On the teacher"s desk, the traditional bright red apple will have been replaced by a multiple-control panel (控制板) and magnetic tape players. The tape machines will run prerecorded lessons which pupils will follow by headphones. The lesson will be specifically connected closely to the student"s levels of ability. For instance, while the class as a whole studies history, each student will receive an individual history lesson directed to his particular level of ability. Should questions arise, the students will be able to talk directly to the teacher on individual "intercoms" (对讲装置) without disturbing the rest of the class. In this way, the teacher will be able to conduct as many as three classes at the same time.

单选题"The world"s environment is surprisingly healthy. Discuss." If that were an examination topic, most students would tear it apart, offering a long list of complaints: from local smog (烟雾) to global climate change, from the felling (砍伐) of forests to the extinction of species. The list would largely be accurate, the concern legitimate. Yet the students who should be given the highest marks would actually be those who agreed with the statement. The surprise is how good things are, not how bad. After all, the world"s population has more than tripled during this century, and world output has risen hugely, so you would expect the earth itself to have been affected. Indeed, if people lived, consumed and produced things in the same way as they did in 1900 (or 1950, or indeed 1980), the world by now would be a pretty disgusting place, smelly, dirty, toxic and dangerous. But they don"t. The reasons why they don"t, and why the environment has not been ruined, have to do with prices, technological innovation, social change and government regulation in response to popular pressure. That is why today"s environmental problems in the poor countries ought, in principle, to be solvable. Raw materials have not run out, and show no sign of doing so. Logically, one day they must: the planet is a finite place. Yet it is also very big, and man is very ingenious. What has happened is that every time a material seems to be running short, the price has risen and, in response, people have looked for new sources of supply, tried to find ways to use less of the material, or looked for a new substitute. For this reason prices for energy and for minerals have fallen in real terms during the century. The same is true for food. Prices fluctuate, in response to harvests, natural disasters and political instability; and when they rise, it takes some time before new sources of supply become available. But they always do, assisted by new farming and crop technology. The long term trend has been downwards. It is where prices and markets do not operate properly that this benign (亲戚) trend begins to stumble, and the genuine problems arise. Markets cannot always keep the environment healthy. If no one owns the resource concerned, no one has an interest in conserving it or fostering it: fish is the best example of this.

单选题______, I shall still have to work in the garden. A. As the sun is hot B. Hot as the sun is C. As hot the sun is D. Hot as is the sun

单选题I wish I ______ with you to the movie last night.

单选题To save more money you'll need to be more Ufrugal/U.

单选题China Uintends/U to join WTO (World Trade Organization) and she is making every effort to accomplish the negotiation procedure.

单选题She ______ clean out the spare room last week, but she was too much occupied at that time. A. intended to B. was intended to C. had intended to D. has intended to

单选题Text 1 It's hard to say for sure what the next big thing will be, but these items made the list of 10 emerging technology trends that will change the world, according to the January issue of the Massachusetts Institute of Technology Magazine Technology Review. "We were looking for things that were just emerging now and over the next five years would begin to have a major impact", David Rotman, the magazine's deputy editor, said Thursday. Some of the items have been on the verge of widespread use for quite some time, such as biometrics and speech recognition. Others chosen by the MIT magazine editors are topics that most people have never heard of, such as microphotonics and microfluidics. The magazine focused on developments in three areas: information technology, nanotechnology and biotechnology. One significant area in biotechnology, the magazine highlights, is work on brain-machine interfaces that could someday allow people to control artificial devices that replace lost functions. Today, research is more limited, with scientists able to take signals from individual neurons in an animal's brain and send them to a robot that can turn the signals into motion. But the potential is huge, according to Duke University neurobiologist Miguel Nicolelis. "Imagine if someone could do for the brain what the pacemaker did for the heart." Nicolelis told the MIT journal. In the purely digital realm, the magazine suggests that the field of robotics could be poised to move beyond the restricted market of Performing simple, highly repetitive tasks. "Robot builders make a convincing case that in 2001, robots are where personal computers were in 1980", writes Technology Review senior editor David Talbot, "poised to break into the marketplace as common corporate tools and routine consumer products performing life's tedious chores." Until now the problem has been that robots have been costly and difficult to design. One approach that the magazine highlights is the work of Brandeis University researcher Jordan Pollack, who builds robots that can build other robots.

单选题“南麒北马关东唐”中的“唐”是( )。

单选题 Since we are social beings, the quality of our lives depends in large measure on our in- terpersonal relationships. One strength of the human condition is our tendency to give and receive support from one another under stressful circumstances. Social support consists of the exchange of resources among people based on their interpersonal ties. Those of us with strong support systems appear better able to cope with major life changes and daily hassles (困难). People with strong social ties live longer and have bet- ter health than those without such ties. Studies over a range of illnesses, from depression to heart disease, reveal that the presence of social support helps people fend off (挡开) illness, and the absence of such support makes poor health more likely. Social support cushions stress in a number of ways. First, friends, relatives, and co-workers may let us know that they value us. Our self-respect is strengthened when we feel accepted by others despite our faults and difficulties. Second, other people often pro- vide us with informational support. They help us to define and understand our prob- lems and find solutions to them. Third, we typically find social companionship sup- portive. Engaging in leisure-time activities with others helps us to meet our social needs while at the same time distracting (转移……注意力) us from our worries and troubles. Finally, other people may give us instrumental support--a financial aid, material resources, and needed services--that reduces stress by helping us resolve and cope with our problems.

单选题As the plane circled over the airport, everyone sensed that something was wrong. The plane was moving unsteadily through the air, and (31) the passengers had fastened their seat belts, they were suddenly thrown forward. At that moment, the air-hostess (32) . She looked very pale, but was quite (33) . Speaking quickly but almost in a whisper, she (34) everyone that the pilot had fainted and asked if any of the passengers knew anything about machines or at least how to drive a car. After a moment's (35) , a man got up and followed the hostess into the pilot's cabin. Moving the pilot aside, the man took his seat and listened carefully to the urgent instructions that were being sent by radio from the airport below. The plane was now dangerously close (36) the ground, but to everyone's relief, it soon began to climb. The man had to (37) the airport several limes in order to become (38) with the controls. Therefore the danger had not yet passed. The terrible (39) came when he had to land. Following information, the man guided the plane toward the airfield. It shook violently (40) it touched the ground and then moved rapidly along the runway and after a long run it stopped safely.

单选题They are confronting tremendous and more complicated problems.

单选题Bob: It's a beautiful day today! How about a little trip out into the country? Mark: ______ A. That sounds great. What should I do for the preparation? B. I don't know. I really haven't thought about what we'd do. C. Well, would you like me to pack picnic or to buy something? D. It's all right. That sounds like a good idea.

单选题Cars are involved in many accidents, and they ______ a lot of deaths.

单选题Woman: I think the Internet is more of a distraction than a benefit to students. Man: That"s true. ______

单选题Nancy is so poor that even fifty dollars ______ a big sum to her. A. is B. are C. add D. equal

单选题A: Here"s a gift for you, I bought it in India. B: ______

单选题Though ______ in a big city, Peter always prefers to paint the primitive scenes of country life.