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The mayor has offered a reward of $ 5 000 to __ who can capture the tiger alive or dead.
A. both B. others C. anyone D. another
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Sometimes, the simplest ideas are the best. For example, to absorb heat from the sun to heat water, you need large, flat, black surfaces. One way to do that is to build those surfaces specially, on the roofs of buildings. But why go to all that trouble when cities are rub of black surfaces already, in the form of asphalt (柏油) roads?
Ten years ago, this thought came into the mind of Arian de Bondt, a Dutch engineer. He finally persuaded his boss to follow it up. The result is that their building is now heated in winter and cooled in summer by a system that relies on the surface of the road outside.
The heat-collector is a system of connected water pipes. Most of them ran from one side of the street to the other, just under the asphalt road. Some, however, dive deep into the ground.
When the street surface gets hot in summer, water pumped through the pipes picks up this heat and takes it underground through one of the diving pipes. At a depth of 100 metres lies a natural aquifer (蓄水层) into which several heat exchangers (交换器) have been built. The hot water from the street runs through these exchangers, warning the ground-water, before returning to the surface through another pipe. The aquifer is thus used as a heat store.
In winter, the working system is changed slightly. Water is pumped through the heat exchangers to pick up the heat stored during summer. This water goes into the building and is used to warm the place up. After performing that task, it is pumped under the asphalt and its remaining heat keeps the road free of snow and ice.
Which of the following is true according to the first two paragraphs?
A. Arian de Bondt got his idea from his boss.
B. Large, flat, black surfaces need to be built in cities.
C. The Dutch engineer's system has been widely used.
D. Heat can also be collected from asphalt roads.
For what purpose are the diving pipes used?
A. To absorb heat from the sun.
B. To store heat for future use.
C. To turn solar energy into heat energy.
D. To carry heat down below the surface.
From the last paragraph we can learn that __
A. some pipes have to be re-arranged in winter
B. the system can do more than warming up the building
C. the exchangers will pick up heat from the street surface
D. less heat may be collected in winter than in summer.
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“Well, I’ll tell you a secret ...” said the boy, with his mouth almost _____ my ear.
A. touched B. touching C. touch D. to touch
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The thief fell to the ground, his left foot _____ and blood _____ down from his mouth.
A. breaking; running B. broken; running
C. breaking; run D. broken; run
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______ it with me and I’ll see what I can do.
A. When left B. Leaving
C. If you leave D. Leave
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Don’t bother to look for my dictionary --- it ______ some day.
A. turns up B. has turned up
C. will turn up D. is going to turn up
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He ______ at the meeting, but his heart attack prevented him.
A. will speak B. is going to speak
C. had to speak D. was going to speak
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—Many of my classmates have a bad opinion of Li Xiaojun.
—____.
A.What a shame! B.But he is spoken better of by the teachers.
C.Poor Xiaojun! D.It’s really disappointing.
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The computer was one of the greatest______ in the 20th century.
A. inventions B. discoveries C. findings D. explorations
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This book gives a brief _____ of the history of the castle and details of the art collection in the main hall.
A. outline B. reference C. article D. outlook
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