If Stephen Hawking is able to find his Theory of Everything, he will have given the world the opportunity to understand things that will change the whole nature of science and probably also the way we live.
16.Stephen Hawking will be 50 years old by 2017.
A.Right B.Wrong C.Not mentioned
参考答案：B
If Stephen Hawking lives until the year 2017, he will have lived more than 50 years longer than his doctors expected.
17.Stephen Hawking suffers from a rare brain disease.
A.Right B.Wrong C.Not mentioned
参考答案：A
18.Stephen Hawking is Professor of Mathematics at Cambridge University.
A.Right B.Wrong C.Not mentioned
参考答案：A
19.A Brief History of Time is very difficult for students to understand.
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A.Right B.Wrong C.Not mentioned
参考答案：B
20.Stephen Hawking has much time to think because he doesn't have to work.
A.Right B.Wrong C.Not mentioned
参考答案：A
21.Stephen Hawking has spent around ten years explaining the secrets of
A.Right B.Wrong C.Not mentioned
参考答案：C
22.The Theory of Everything is about the rules that everything in the universe follows.
A.Right B.Wrong C.Not mentioned
参考答案：A
三、概括大意与完成句子
Geothermal(地热)Energy
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1 Since heat naturally moves from hotter regions to cooler ones, the heat from the earth's center flows outwards towards the surface. In this way, it transfers to the next layer of rock. If the temperature is high enough, some of this rock melts and forms magma(岩浆). The magma ascends in its turn towards the earth's surface. It often remains well below the earth's surface, creating vast areas of hot rock. In such regions, there are deep cracks, which allow rainwater to descend underground. Some of the heated rainwater travels back up to the earth's surface where it will appear as a hot spring. However, if this ascending hot water reaches a layer of impermeable(不可渗透的)rock, it remains trapped, forming a geothermal reservoir. If geothermal reservoirs are close enough to the surface, they can be reached by drilling wells. Hot water and steam shoot up the wells naturally, and can be used to produce electricity in geothermal power plants.
2.A few geothermal power plants depend on dry-stem reservoirs which produce steam but little or no water. In these cases, the steam is piped up directly to provide the power to spin a turbine generator. The first geothermal power plant, constructed at Lardarello in Italy, was of this type, and is still producing electricity today.
3.Most currently operating geothermal power plants are either \plants or binary(双重的)plants. Flash plants produce mainly hot water ranging in
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temperature from 300° to 700°Fahrenheit. This water is passed through one or two separators where released from the pressure of the underground reservoir, it \the turbine and produce electricity. The geothermal water and steam are then reinjected directly back down into the earth to maintain the volume and pressure of the reservoir. Gradually they will be reheated and can then be used again.
4.A reservoir with temperatures below 300° Fahrenheit is not hot enough to flash steam but it can still be used to generate electricity in binary fluid. The steam from this is used to power the turbines. As in the flash steam plant, the geothermal water is recycled back into the reservoir.
23.Paragraph1_____
A.Dry steam plants
B.Binary plants
C.Origin of geothermal energy
D.Generation of electricity
E.Flash steam plants
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F.Recyclable water and steam
参考答案：C
24Paragraph2_____
A.Dry steam plants
B.Binary plants
C.Origin of geothermal energy
D.Generation of electricity
E.Flash steam plants
F.Recyclable water and steam
参考答案：A
25Paragraph3_____
A.Dry steam plants
B.Binary plants
C.Origin of geothermal energy
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