单选题Whatdoesthemanmean?

单选题{{B}}Part A{{/B}} {{I}} You will hear 10 short dialogues. For each dialogue, there is one question and four possible answers. Choose the correct answer — A, B, C or D, and mark it in your test booklet. You will have 15 seconds to answer the question and you will hear each dialogue ONLY ONCE. Now look at Question 1.{{/I}}

单选题Why is "such simplistic advice" (Line 1, Para. 3) impossible to follow?

单选题 Text Every human being, (26) what he is doing, gives off body heat. The usual problem is (27) dispose of it. But the designers of the Johnstown campus of the University of Pittsburgh set themselves the (28) problem how to collect body heat. They have designed a collection system which utilize (29) body heat, but the heat given off by such objects (30) light bulbs and refrigerators as well. The system works so well (31) no conventional fuel is needed (32) the campus's six buildings comfortable. Some parts of most modern buildings, theatres and offices (33) classrooms are more than heated by people and lights and sometimes must be air-conditioned and (34) in winter. The technique of (35) heat and redistributing it is (36) "heat recovery". A few modern buildings recover (37) , but the university's system is the first to recover heat (38) some buildings and reuse it in (39) . Along the way, Pitt has learned a great deal about some of its heal producers. The (40) a student studies, the more heat his body (41) . Male students emit more than (42) students, and the larger a student, the more heat his body (43) . It is tempting to (44) that the hottest prospect for the Johnstown campus would be a (45) overweight male genius.

单选题Whatdidthewomansayabouttheexam?

单选题When it rains or snows, some of the water is reserved by the soil, some is absorbed by vegetation, some evaporates, and the remainder, which reaches stream channels, is called runoff(径流). Floods occur when soil and vegetation cannot absorb all the water; water then runs off the land in quantities that cannot be carried in stream channels or retained in natural ponds and constructed reservoirs. About 32 percent of all precipitation (雨雪的降落) is runoff, and this amount may be increased by melting snow masses. Periodic floods occur naturally on many rivers, forming an area known as the floodplain (涝原). These fiver floods often result from heavy rain, sometimes combined with melting snow, which causes the rivers to overflow their banks; a flood that rises and falls rapidly with little or no advance warning is called a flash flood (暴洪). Flash floods usually result from intense rainfall over a relatively small area. Coastal areas are occasionally flooded by unusually high tides induced by severe winds over ocean surfaces, or by tidal waves (海啸) caused by undersea earthquakes. Floods not only damage property and endanger the lives of humans and animals, but exert other effects as well. Rapid runoff causes soil erosion as well as sediment (沉淀物) deposition problems downstream(下游). Spawning(产卵) grounds for fish and other wildlife habitat are often destroyed. High-velocity currents increase flood damage; prolonged high floods delay traffic and interfere with drainage and economic use of lands. Bridge abutments (桥台) , bank lines, sewer outfalls, and other structures within floodways are damaged, and navigation and hydroelectric power are often impaired(侵害). Financial losses due to floods all over the world are commonly billions of dollars each year. The basic methods of flood control have been practiced since ancient times. These methods include reforestation (再造林) and the construction of levees(防洪堤), dams, reservoirs, and floodways.

单选题[此试题无题干]

单选题

单选题The “over-the-counter drugs” are those that _______.

单选题WhatwerethescientistsworriedaboutsoonaftertheGulfWar?

单选题Questions 15～18 are based on the following passage.

单选题{{I}} Questions 18 ～ 21 are based on the following interview between a reporter and Mrs. Smith on her exchanging roles with her husband.{{/I}}

单选题{{I}}Questions 14～17 are based on the following passage.{{/I}}

单选题Look at the first paragraph, who were fight? The authorities or the pessimists?