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发布时间:2023-10-07 01:24:20

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Passage Three All the useful energy at the surface of the earth comes from the activity of the sun. The sun heats and feeds mankind. Each year it provides men with two hundred million tons of grain and nearly ten million tons of wood. Coal, oil, natural gas, and all other fuels are stored-up energy from the sun. Some was collect ed by this season’s plants as carbon compounds. Some was stored by plants and trees ages ago. Even waterpower derives from the sun. Water turned into vapor by the sun falls as rain. It courses down the mountains and is converted to electric power. Light transmits only the energy that comes from the sun’ s outer layers, and much of this energy that is directed toward the earth never arrives. About nine-tenths of it is absorbed by the atmosphere of the earth. In fact; the earth itself gets only one half-billionth of the sun’ s entire output of radiant energy.

All the useful energy at the surface of the earth comes ()
A. directly from the sun
B. from the sun' s activity
C. from energy stored by the sun
D. from radiation of the sun

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Passage Three All the useful energy at the surface of the earth comes from the activity of the sun. The sun heats and feeds mankind. Each year it provides men with two hundred million tons of grain and nearly ten million tons of wood. Coal, oil, natural gas, and all other fuels are stored-up energy from the sun. Some was collect ed by this season’s plants as carbon compounds. Some was stored by plants and trees ages ago. Even waterpower derives from the sun. Water turned into vapor by the sun falls as rain. It courses down the mountains and is converted to electric power. Light transmits only the energy that comes from the sun’ s outer layers, and much of this energy that is directed toward the earth never arrives. About nine-tenths of it is absorbed by the atmosphere of the earth. In fact; the earth itself gets only one half-billionth of the sun’ s entire output of radiant energy.

For mankind, the sun is the source of ()
A. solar activity
B. all heat
C. all food
D. both B and C
[单项选择]Prediction is useful because of all the following reasons except that______.
[单项选择]

Passage Three Sports fans all over the world recognize the name Michael Jordan. From Taiwan to Tennessee. kids wear clothes with his picture on them. Jerseys(球服)with his number 23 on the front, jackets with the Bulls on the back, and Air Jordan sports shoes all reflect the fame of this superstar. Michael Jordan has become the most famous attraction of the world’s favorite spectator sport. Michael Jordan was born in 1963 in Brooklyn, New York. Growing up Michael did not look like a future superstar. He was very shy and didn’t like to talk to other people about himself. He was also very short. He showed little promise of having a future career in basketball. When he tried out for the freshman team in high school, Michael didn’t make it. The next year, however, he grew tall enough to join the team. Michael’s road to fame began at the University of North Carolina. He brought an acrobatic styleto the game that few had seen before. Michael used his quickn
A. shoes
B. jerseys
C. jackets
D. socks

[单项选择]The reason why all the solar energy falling on the earth can' t be utilized is that ______ .
A. only a very small part is available
B. the sun is too distant from the earth
C. it takes thousands of years for this energy to be stored up in coal and oil
D. our scientific knowledge is not sufficient
[单项选择]Why do most intelligence tests combine all three types of questions in equal numbers
[单项选择]Although money is always useful, it isn't all ______.
A. what there is to life
B. to which there is in life
C. there is to life
D. that is in life
[多项选择]Which three Layer 2 access designs have all of their uplinks in an active state?()
A. Flex Links
B. loop-free U
C. looped square
D. looped triangle
E. loop-free inverted U
[单项选择]My niece has three brothers, all ( ) than she. ( ), John, is an oil worker.
A. older; The oldest
B. older; The eldest
C. elder; The oldest
D. elder; The old one
[单项选择]my wife has three brothers,all ( ) than she. ( ) _George,is an officer
A. elder…The oldest
B. older…The oldest
C. elder…The old one
D. older…The oldest
[单项选择]After a three-hour heated discussion, all the members in the jury reached the conclusions that the man was ______of murder.
A. criminal
B. charged
C. guilty
D. faulty

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