单选题

单选题According to the author, the main problem of our environment today is ______.

单选题{{B}}C{{/B}} One answer to the question of land shortage was suggested by an organization some years ago. A city was to be built at sea, housing 30,000 people. The suggestion was to shape the city like a harbor (港口). The outer wall of the harbor would stand on steel columns resting on the sea bed. Naturally this could only be where the water was fairly shallow. The people would like to live in flats in the fifty-metre high outer wall. The flats would be all face inwards, and would be made of concrete (混凝土) and glass. The glass would be specialy made and colored to control the heat and strong light from the sun. The planners called this man-made harbor would be calm. It would be floating islands carrying more building; a hospital, two theaters, museums, an art exhibition hall and a church. One of the islands would be a special factory to take the salt out of sea water and turn it into fresh water. People living in the city could move around on small boats driven by electricity, so there would be no air pollution from the burning of gas. There would be platforms outside the man wall for ships bringing supplies. People could also travel to the mainland by motorboat or water plane.

单选题How many of us ______ a meeting that is not important to us would be interested in the discussion?[A] attended[B] attending[C] to attend[D] have attended

单选题The following are good advice except ______.

单选题—How much does the dog weigh? —Three pounds ______ the dog used to be, but I don't know the weight now.[A] were what[B] was what[C] were that[D] was that

单选题What is your favorite color? Do you like yellow, orange, red? If you do, you must be an optimist, a leader, an active person who enjoys life, people and excitement. Do you prefer grays and blues? Then you are probably quiet, shy, and you would rather follow than lead. You tend to be a pessimist. At least, this is what psychologists tell us, and they should know, because they have been seriously studying the meaning of color preference, as well as the effect that colors have on human beings. They tell us, among other facts, that we do not choose our favorite color as we grow up—we are born with our preference. If you happen to love brown, you did so, as soon as you opened your eyes, or at least as soon as you could see clearly. Colors do influence our moods—there is no doubt about it. A yellow room makes most people feel more cheerful and more relaxed than a dark green one; and a red dress brings warmth and cheer to the saddest winter day. On the other hand, black is depressing. A black bridge over the Thames River, near London, used to be the scene of more suicides than any other bridge in the area—until it was repainted green. The number of suicide attempts immediately fell sharply; perhaps it would have fallen even more if the bridge had been done in pink or baby blue. Light and bright colors make people not only happier but more active. It is an established fact that factory workers work better, harder, and have fewer accidents when their machines are painted orange rather than black or grey.

单选题Nell Hunt' s design would finally lead to the improvement of the way of

单选题WhichbusshouldthemantaketogettoPrinceStreet?A.BusNo.12.B.BusNo.30.C.BusNo.13.

单选题All the students ______ John went to the park on Sunday. He was ill.[A] besides[B] except[C] with[D] without

单选题[此试题无题干]

单选题It was the first snow of winter. Up until now, I had been able to dress myself for recess (课间休息), but today I would need some help. Miss king, my kindergarten teacher, may still remember this one. I managed to get into my snow pants, but I struggled with my jacket because it did not fit well. It was a hand-me-down from my brother. Finally it was time to have Miss King help me with my boots. She said, "By the end of winter, you will be able to put on your own boots. " I handed her my boots, and she managed to get the first one into place and then worked the second one on, too. I said, "They are on the wrong feet." She struggled to get the boots off and tried again. Then I said, "These aren't my boots, they are my brother's boots and I hate them!" Somehow, she managed to act as though I was not an annoying little girl. She pushed and shoved, less gently this time and the boots were returned to their proper place on my feet. Seeing the end of her struggle with me, she asked, "Now, where are your gloves?" I looked into her eyes and said, "I did not want to lose them, so I put them into the toes of my boots./

单选题______a boy of ten, he started working to support his family.

单选题Bill and Jessica were almost ______ taking turns choosing the players for their teams.

单选题What is the other purpose of building these newsstands? Give the laid-off workers a chance to

单选题Whatisthetextabout?

单选题Reading is a way of enjoyment, relaxation, rest or freedom from worry. These can be felt by the readers from the actual reading (36) and from the impact provided. Reading provides the knowledge we are unable to gain from personal (37) . If we cannot travel around the (38) , we can read books (39) travel and gain information of (40) countries, people (41) their ways of life. We can also read about the (42) customs of different countries. Surely we cannot go (43) to the past, yet, by reading (44) , we can obtain knowledge of the past, something about the lives of great and famous (45) , and (46) the world it- serf. From reading, we can (47) of new things, new methods of inventions, different methods of (48) things, different techniques of making things, etc. For example, we can learn (49) an electric cooker is invented. In cooking, we can learn how to (50) an apple pie by reading instructions from books. (51) our daily lives, we (52) make a complicated device. (53) , by reading more books on science, we can (54) with the advances of modern (55) .

单选题Because we can feel that things are heavy, we think of weight as being a fixed quality in an object, but it is not really fixed at all. If you could take a one pound packet of butter 4, 000 miles out from the earth, it would weigh only a quarter of a pound. Why would things weigh only a quarter as much as they do at the surface of the earth if we took them 4 000 miles out into space? The reason is this: All objects have a natural attraction for all other objects; this is called gravitational attraction, but this power of attraction between two objects gets weaker as they get farther apart. When the butter was at the surface of the earth, it was 4 000 miles from the centre (in other words the radius(半径)of the earth is 4 000 miles). When we took the butter 4 000 miles out, it was 8 000 miles from the centre, which is twice the distance. If you double the distance between two objects, their gravitational attraction decreases two times two. If you treble(翻三倍)the distance, it gets nine times weaker(three times three). If you take it four times as far away, it gets sixteen times weaker (four times four)and so on.