单选题{{B}}Passage 37{{/B}} Why don't birds get lost on their long flights from one place to another? Scientists have been puzzled over this question for many years. Now they're beginning to fill in the blanks. Not long ago, experiments showed that birds rely on the sun to guide them during daylight hours. But what about birds that fly by night? (37) {{U}}Tests with artificial stars have proved that certain night-flying birds are able to follow the stars in their long-distance flights.{{/U}} A dove had spent its lifetime in a cage and had never flown under a natural sky. Yet it showed an inborn ability to use the stars for guidance. The bird's cage was placed under an artificial star-filled sky. The bird tried to fly in the same direction as that taken by his outdoor cousins. Any change in the position of the artificial stars caused a change in the direction of his flight. The stars are apparently their principal means of navigation. When the stars are hidden by clouds, they seemingly find their way by such landmarks as mountain ranges, coast lines, and river courses. But when it's too dark to see these, the doves circle helplessly, unable to find their way.

单选题{{B}}Passage 3{{/B}} Blind people can "see" things by using other parts of their bodies. This fact may help us to understand our feelings about color. If blind people can sense color differences, then perhaps we, too, are affected by color unconsciously (无意识地). (79) {{U}}Manufacturers (生产商) have discovered by experience that sugar sells badly in green wrappings, that blue foods are considered unpleasant, and that cosmetics (化妆品) should never be packaged in brown.{{/U}} .These discoveries have grown into a branch of color psychology. Color psychology now finds application in everything from fashion to decoration. Some of our preferences are clearly psychological. Dark blue is the color of the night sky and therefore associated with calm, while yellow is a day color with associations of energy and incentive (刺激). For a primitive man, activity during the day meant hunting and attacking, while he soon saw red as the color of blood and anger and the heat that came with effort. And green is associated with passive defense and self-protection. (80) {{U}}Experiments have shown that colors, partly because of their psychological associations, also have a direct psychological effect.{{/U}} People exposed to bright red show an increase in breath, in heartbeat and in blood pressure; red is exciting. Similar exposure to pure blue has exactly the opposite effect; it is a calming color. Because of its exciting meaning, red is chosen as the signal for danger, but closer analysis shows that a vivid yellow can produce a more basic state of alarm. So fire engines and ambulances in some advanced communities are now rushing around in bright yellow colors that stop the traffic dead.

单选题—You didn't hurt at all in the traffic. — ______ . I was a lucky dog.

单选题You (can) arrive in Beijing (earlier for) the meeting (though) you don"t mind (taking) the night train.

单选题The protection (of) our environment (is) not (nothing) to be left to the government. Everyone should (be concerned).

单选题To swim across the English Channel takes at least nine hours. It's a hard work and it makes you short of breath. To fly over the Channel takes only twenty minutes (as long as you're not held up at the airport), but it's an expensive way to travel. You can travel by hovercraft if you don't mind the noise, and that takes forty minutes. Otherwise, you can go by boat, if you remember your seasickness pills. All these means of transport have their problems and the weary traveler often dreams of being able to drive to France in his own car. "Not possible," you say. Well, wait a minute. People are once again considering the idea of a Channel tunnel or bridge.This time, the Greater London Council is looking into the possibility of building a Channel link straight to London. (79) A bridge would cost far more than a tunnel, but you would be able to go by rail or by car on a bridge, whereas a tunnel would provide a rail link only. Why is this idea being discussed again? Is Britain becoming more conscious of the need for links with Europe as a result of joining the EEC (欧共体)? Well, perhaps. The main reason, though, is that a tunnel or bridge would reach the twenty square kilometers of London's disused docklands. A link from London to the continent would stimulate trade and revitalize the port, and would make London a main trading center in Europe. (80) With a link over the Channel, you could buy your fish and chips in England and be able to eat them in France while they were still warm!

单选题The writer was always looking for suitable ______ to use in his next story.

单选题It is difficult for us to explain phenomena that we have little or ______ direct knowledge.

单选题Shanghai is ______ biggest city in ______ China in terms of population.

单选题Visitors coming for short periods of time do not always experience ____ intense emotions ____ visitors who live in foreign countries for longer terms.

单选题Having been fond guilty, the man was given a severe ______ by the judge. A. service B. sentence C. crime D. crisis

单选题The door over there needs ______.

单选题{{B}}Passage 3{{/B}}{{B}}Questions 11 to 15 are based on the following passage.{{/B}} When we accept the evidence of our unaided eyes and describe the Sun as a yellow star, we have summed up the most important single fact about it--at this moment in time. It appears probable, however, that sunlight will be the color we know for only a negligibly (微不足道的) small part of the Sun's history.Stars, like individuals, age and change. As we look out into space, we see around us stars at all stages of evolution. There are faint blooded dwarfs so cool that their surface temperature is a mere 4,000 degrees Fahrenheit; there are scaring ghosts blazing at 100,000 degrees Fahrenheit and almost too hot to be seen, for the great part of their radia-tion is in the invisible ultraviolet range. Obviously, the "daylight" produced by any star depends on its temperature; today (and for ages to come) our Sun is at about 10,000 de-grees Fahrenheit, and this means that most of the Sun's light is concentrated in the yellow band of the spectrum, falling slowly in intensity toward both the longer and shorter light waves.That yellow "hump" will shift as the Sun evolves, and the light of the day will change accordingly. (80) {{U}}It is natural to assume that as the Sun grows older, and uses up its hydrogen fuel-which it is now doing at the spanking rate of half a billion tons a sec-ond-it will become steadily colder and redder. {{/U}}

单选题______ his money lost than he began to cry and shout loudly.

单选题E-mail (as well as) mobile telephones (are) becoming (more and more) popular (in) daily communication.

单选题--Is there any possible way to help them get rid of such a bad habit? --To tell the truth, it's very hard. But we __________ on this problem.