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[主观题]

The energy which the sun radiates goes in every direction, and only a minute part of it fa

lls on the earth. Even so, it represents power of about 5,000,000 horsepower (马力)per square mile per day; the sun gives us as much energy every minute as mankind utilizes in a year. At present, we use this energy in directly, and it is our final source of power. Coal represents the chemical action of the sun on green plants thousands of years ago. Water power results from the rain formed by vapor which comes from the evaporation of power. Coal represents the rain formed by vapor which comes from the evaporation of water under the sunshine. Even windmills operate because of air currents set in motion by the different heating affects of the sun in different places. Some day, through chemistry or some type of solar engine, we shall harness this great source of energy more directly. Already a scientist has worked out an engine, surprisingly efficient, in with the sun' s rays are concentrated through mirrors on a tube of water to create steam.

How much energy given off by the sun reaches the earth？

A．100 % but indirectly

B．5 %

C．0.5

D．only a very tiny amount

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更多“The energy which the sun radia…”相关的问题

第1题

Which of the following may lead to family quarrels according to the passage？A．Unawareness

Which of the following may lead to family quarrels according to the passage？

A．Unawareness of energy cycles.

B．Familiar monologues.

C．A change in a family member's energy cycle.

D．Attempts to control the energy cycle of other family members.

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第2题

Which of the following statements in supported by the passage？A．The sun shines co

Which of the following statements in supported by the passage？

A．The sun shines constantly and gives out the same amount of energy every year．

B．The cause of the sun’S fluctuations is its loss of energy with each passing year

C．It is sure that the energy sent out by the sun will drop when more sun spots appear．

D．Fluctuations in weather pattems are the results of the pull of gravity．

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第3题

Which living things can use sun energy directly？A．Animals.B．Plants.C．Both animals and plan

Which living things can use sun energy directly？

A．Animals.

B．Plants.

C．Both animals and plants.

D．All living things.

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第4题

Which of the following may lead to family quarrels according to the Passage？A．Unawareness

Which of the following may lead to family quarrels according to the Passage？

A．Unawareness of family members' energy cycles.

B．Familiar monologues.

C．A change in a family member's energy cycle.

D．Attempts to control the energy cycle of other family members.

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第5题

Which is one beneft of foods in high fiber?（）。

A.They provide more energy

B.They help improve the skin

C.They help build healthy teeth

D.They are good for eyesight

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第6题

Which of the following statements is supported by the passage？A．The sun shines constantly

Which of the following statements is supported by the passage？

A．The sun shines constantly and gives out the same amount of energy every year.

B．The cause of the sun' s fluctuations is its loss of energy with each passing year.

C．It is sure that the energy sent out by the sun will drop when more sun spots appear.

D．Fluctuations in weather patterns are the results of the pull of gravity.

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第7题

According to the passage which of the following is NOT true？A.About 2 million metric tons

According to the passage which of the following is NOT true？

A.About 2 million metric tons of garbage is burned in France each year．

B.In a modem society，more and more garbage is produced each year．

C.Using garbage is a good way to solve the problem of energy shortage．

D.It will be too expensive to use garbage as an energy source．

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第8题

There are many problems in our modern world. One very serious problem is energy. We get a great 【71】 of energy we need from coal, gas, and oil. However, the 【72】 of energy which we use is 【73】 every year, and we only have enough coal, gas, and oil for the next twenty or thirty years. How will we live 【74】 the energy which these things give us？ Scientists are looking for 【75】 to this problem. They are looking for new 【76】 to produce energy. For example, they are working with new ways 【77】 energy from the light and heat of the sun. They are also working with plans which produce energy from 【78】 of the oceans. All of the new methods 【79】 scientists are finding are still very expensive, but perhaps they will help solve our energy problems 【80】 the future.

(71)

A．number

B．group

C．price

D．deal

72.

A

effect

B

amount

C

course

D

program

73.

A

increase

B

increasing

C had increased

D is ncreasing

74.

A

without

B

improve

C

producing

D

strength

75.

A

key

B a direction

C a solution

D service

76.

A

cost

Bmethod

C

branch

D

pound

77.

A Show

B pay

C save

D produce

78.

A property

B remedy

welfare

D movements

79.

A So that

B

which

C

whose

D Ofwhich

80.

A

at

Bfor

C

In

D

from

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第9题

Which one of the following applies to the use of renewables in developed nations？A．The mor

Which one of the following applies to the use of renewables in developed nations？

A．The more developed a nation is, the higher the proportion of renewables being used.

B．Developed nations are experiencing a fierce energy revolution.

C．Developed nations' ties with the oil industry are becoming tense.

D．Developed nations haven't reached a consensus about using more renewables.

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第10题

Do you find getting up in the morning so difficult that it's painful？ This might be called

laziness, but Dr. Kleitman has a new explanation. He has proved that everyone has a daily energy cycle.

During the hours when you labor through your work you may say that you're "hot". That's true. The time of day when you feel most energetic is when your cycle of body temperature is at its peak. For some people the peak comes during the forenoon. For others it comes in the afternoon or evening. No one has discovered why this is so, but it leads to such familiar monologues as:" Get up, John! You' 11 be late for work again \" The possible explanation to the trouble is that John is at his temperature-and-energy peak in the evening. Much family quarrelling ends when husbands and wives realize what these energy cycles mean, and which cycle each member of the family has.

You can't change your energy cycle, but you can learn to make your life fit it better. Habit can help, Dr. Kleitman believes. Maybe you're sleepy in the evening but feel you must stay up late anyway. Counteract your cycle to some extent by habitually staying up later than you want to. If your energy is low in the morning but you have an important job to do early in the day, rise before your usual hour. This won't change your cycle, but you' 11 get up steam(振作) and work better at your low point.

Get off to a slow start which saves your energy. Get up with a leisurely yawn and stretch. Sit on the edge of the bed a minute before putting your feet on the floor. Avoid the troublesome search for clean clothes by laying them out the night before. Whenever possible, do routine work in the afternoon and save tasks requiring more energy or concentration for your sharper hours.

If a person finds getting up early a problem, most probably______.

A．he is" hot"

B．he refuses to follow his own energy cycle

C．he is not sure when his energy is low

D．he is very energetic in the afternoon or evening

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