| 考博易错题（2019/9/24） |
| 第1题：Assuming that a constant travel-time budget, geographic constraints and short-term infrastructure constraints persist as fundamental features of global mobility, what long-term results can one expect In high-income regions, (21) NorthAmerica, our picture suggests that the share of traffic (22) supplied by buses and automobiles will decline as high-speed transport rises sharply. In developing countries, we (23) the strongest increase to be in the shares first for buses and later for automobiles. Globally, these (24) in bus and automobile transport are partially offsetting. In all regions, the share of low-speed rail transport will probably continue its strongly (25) decline. We expect that throughout the period 1990～2050, the (26) NorthAmerican will continue to devote most of his or her 1.1-hour travel-time (27) to automobile travel. The very large demand (28) air travel (or high-speed rail travel) that will be manifest in 2050 (29) to only 12 minutes per person a day; a little time goes a long way in the air. In several developing regions, most travel (30) in 2050 will still be devoted to nonmotorized modes.Buses will persist (31) the primary form of motorized transportation in developing countries for decades. (32) important air travel becomes, buses, automobiles and (33) low-speed trains will surely go on serving vital functions. (34) of the super-rich already commute and shop in aircraft, but average people will continue to spend most of their travel time on the (35) . A、generalB、commonC、local D、average |
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| 第2题： The word "slump" in the first paragraph may be replaced by ______. A．slouch B．decline C．increase D．stamp |
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| 第3题：In the passage, which of the following is NOT included in the advantage of a survey of public opinions
A．Ensuring an unyielding instrument of obstruction by the opponents of genetics. B．Caring for the stakeholders' forum after knowing the public voice. C. Drawing public concerns about the risks of genetically modified crops. D．Rebuilding public trust in the application of science to foods. |
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| 第4题：The passage suggests that if there were a slight global warming at the present time, it would be ______.
A．easy to measure the exact increase in temperature because of the abundances of temperature recording stations throughout the world B．difficult to prove that the warming was caused by the burning of fossil fuels C．easy to demonstrate the effects of the warming on the water vapor in the atmosphere D．difficult to measure the increase ofCO2 in the atmosphere because of local variations in amount |
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| 第5题：{{B}}Passage 6{{/B}} Sewage and garbage attract sharks inlanD、When floods carry garbage to the rivers they provide a rich diet which sometimes stimulates an epidemic of shark attacks. Warm water generally provides shark food, and a rich diet inflames the shark’s aggression. InBritish waters sharks usually swim peacefully between ten and twenty miles off- shore where warm water currents fatten mackerel and pilchards for their fooD、But the shark is terrifyingly unpredictable. One seaman was severely mauled as far north as Wick in ScotlanD、Small boats have been attacked in theEnglishChannel, Irish Sea and North SeA、 Most of the legends about sharks are founded in ugly fact.Even a relatively small shark--a 200 lB、Zambezi--can sever a man’s leg with one bite, Sharks have up to seven rows of teeth and as one front tooth is damaged or lost another moves forward to take its place. The shark never sleeps. Unlike most fish, it has no air bladder, and it must move constantly to avoid sinking. It is a primitive creature, unchanged for sixty million years of evolution. Its skin is without the specialized scales of a fish. Fully grown, it still has five pairs of separate gills like a three-week human embryo. But it is a brilliantly efficient machine. Its skin carries nerve endings which can detect vibrations from fish moving several miles away. Its sense of smell, the function of most of its brain, can detect one p. art in 600,000 of tuna fish juice in water, or the blood of a fish or animal from a quarter of a mile away. It is colour blind, and sees best in deep water, but it can distinguish shapes and patterns of light and shade easily. Once vibrations and smell have placed its prey the shark sees well enough to home in by vision for the last fifty feet. The shark eats almost anything. It will gobble old tin cans and broken bottles as well as fish, animals and humans.Beer bottles, shoes, wrist watches, car number plates, overcoats and other sharks have been found in dead sharks. Medieval records tell of entire human corpses still encased in armour. The United States military advice on repelling sharks is to stay clothed--sharks go for exposed flesh, especially the feet. Smooth swimming at the surface is essential. Frantic splashing will simply attract sharks, and dropping below the surface makes the swimmer an easy target. If the shark gets close, then is the time to kick, thrash and hit out.A、direct hit on the snout, gills, or eyes will drive away most sharks. The exception is the Great White shark. It simply kills you. |