单选题Why was Towne's early work with stimulated emission done with microwaves?

单选题The author seems to Write his passage in a(n)______manner.

单选题Actually, how many new jobs will be needed during the next ten years to help support the world's workforce?

单选题I am one of the many city people who are always saying that given the choice we would prefer to live in the country away from the dirt and noise of a large city. I have managed to convince myself that if it weren"t for my job I would immediately head out for the open spaces and go back to nature in some sleepy village buried in the country. But how realistic is the dream? Cities can be frightening places. The majority of the population live in massive tower blocks, noisy, dirty and impersonal. The sense of belonging to a community tends to disappear when you live fifteen floors up. All you can see from your window is sky, or other blocks of flats. Children become aggressive and nervous—cooped up at home all day, with nowhere to play; their mothers feel isolated from the rest of the world. Strangely enough, whereas in the past the inhabitants of one street all knew each other, nowadays people on the same floor in tower blocks don"t even say hello to each other. Country life, on the other hand, differs from this kind of isolated existence in that a sense of community generally binds the inhabitants of small villages together. People have the advantage of knowing that there is always someone to turn to when they need help. But country life has disadvantages too. While it is true that you may be among friends in a village, it is also true that you are cut off from the exciting and important events that take place in cities. There"s little possibility of going to a new show or the latest movie. Shopping becomes a major problem, and for anything slightly out of the ordinary you have to go on an expedition to the nearest large town. The city-dweller who leaves for the country is often oppressed by a sense of unbearable stillness and quiet. What, then, is the answer? The country has the advantage of peace and quiet, but suffers from the disadvantage of being cut off; the city breeds a feeling of isolation, and constant noise batters the senses. But one of its main advantages is that you are at the centre of things, and that life doesn"t come to an end at half-past nine at night. Some people have found (or rather bought) a compromise between the two: they have expressed preference for the "quiet life" by leaving the suburbs and moving to villages within commuting distance of cities. They generally have about as much sensitivity as the plastic flowers they leave behind—they are polluted with strange ideas about change and improvement which they force on to the unwilling original inhabitants of the villages. What then of my dreams of leaning on a cottage gate and murmuring "morning" to the locals as they pass by. I"m keen on the idea, but you see there"s my cat, Toby. I"m not at all sure that he would take to all that fresh air and exercise in the long grass. I mean, can you see him mixing with all those hearty males down the farm? No, he would rather have the electric imitation-coal fire any evening.

单选题The layout can be finished the day after tomorrow at a ______, but that would mean I must lose my weekend.

单选题The task was very dangerous. But ______, we would be very famous.

单选题The old farmer was run down by a car. He was taken to the hospital and ______ on by the chief surgeon right now.

单选题What was the rule implied by the trail of the commander of the guards?

单选题We hadn't met for 8 years, but I recognized her ______ I saw her. A. the moment B. for the moment C. the moment when D. at the moment when

单选题The students in the dormitories were forbidden, unless they had special passed, ______ after 11 pm.A. staying outB. stay outC. from staying outD. to stay out

单选题Since many of the older, bigger-tusked animals have already been destroyed, what did the poacher do.'?

单选题Shyness is the cause of much unhappiness for a great many people. Shy people are anxious and self-conscious; that is, they are excessively concerned with their own appearance and actions. Worrisome thoughts are constantly occurring in their minds: What kind of impression am I making? Do they like me? Do I sound stupid? Am I wearing unattractive clothes? It is obvious that such uncomfortable feeling must affect people adversely. A person"s self-concept is reflected in the way he or she behaves, and the way a person behaves affects other people’s reactions. In general, the way people think about themselves has a profound effect on all areas of their live. Shy people, having low self-esteem, are likely to be passive and easily influenced by others. They need reassurance that they are doing "the right thing". Shy people are very sensitive to criticism: they feel it confirms their inferiority. They also find it difficult to be pleased by compliments because they believe they are unworthy of praise. A shy person may respond to a compliment with a statement like this one: "You"re just saying that to make me feel good. I know it’s not true." It is clear that, while self-awareness is a healthy quality, overdoing it is harmful. Can shyness be completely eliminated, or at least reduced? Fortunately, people can overcome shyness with determined and patient effort in building self-confidence. Since shyness goes hand in hand with lack of self-esteem, it is important, for people to accept their weakness as well as their strengths. For example, most people would like to be "A" students in every subject. It is not fair for them to label themselves inferior because they have difficulty in some area. People’s expectations of themselves must be realistic. Living on the impossible leads to a sense of inadequacy. Each one of us is a unique, worthwhile individual. We are interested in our own personal ways. The better we understand ourselves, the easier it becomes to live up to our full potential. Let"s not"allow shyness to block our chances for a rich and fulfilling life.

单选题The underlined phrase" be brought forward" (Par

单选题Whether we go to Paris is ______.[A] on the air[B] in the airs[C] in the air[D] with the air

单选题Who is "Arkan"?

单选题 {{I}} Questions 13 and 16 are based on the following passage. At the end of the passage, you will be given 20 seconds to answer the questions. Now, listen to the passage.{{/I}}

单选题Questions 14 to 17 are based on the following passage. At the end of the passage, you will be given 20 seconds to answer the questions. Now, listen to the passage.

单选题Requiring children to save part of their ______ can also open the door to future saving and investing.