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The sun's energy provides us with all EXCEPT _______.A.rainB.tealC.waterD.light
The sun's energy provides us with all EXCEPT _______.
A.rain
B.teal
C.water
D.light
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The sun's energy provides us with all EXCEPT _______.
A.rain
B.teal
C.water
D.light
We experience different forms of the sun' s energy every day.The sun is the major source ofenergy for our planet.It causes the evaporation (蒸发) of water from the oceans and lakes.Sun-light also provides the energy used by green plants to make their own food.
Much of the energy that comes from the sun never reaches the earth' s surface.It is either re-fleeted or absorbed by the gases in the upper atmosphere.Of the energy that reaches the lower at-mosphere, 30% is reflected by clouds or the earth' s surface.The remaining 70% warms the surfaceof the planet, causes water to evaporate, and provides energy for the water cycle and weather.
Only a tiny part, approximately 0.023%, is actually used by green plants to produce food.
Many gases found in the atmosphere actually reflect heat energy escaping from the earth' s sur-face back to the earth.These gases act like the glass of a greenhouse in that they allow energy fromthe sun to enter but prevent energy form. leaving.They are therefore called greenhouse gases.
When sunlight strikes an object, some of the energy is absorbed and some is reflected.Theamount reflected depends on the surface.Dark-colored surfaces, such as dark soil or forest, absorbmore energy.
According to the passage, the root cause for weather changes on the earth is __________. 查看材料
A.the atmosphere surrounding the earth
B.water from oceans and lakes
C.energy from the sun
D.greenhouse gases in the sky
Of these two basketball teams, the former comes from the US; the ____comes from England. |
[ ] |
A. latter B. later C. late D. lately |
Coal, oil, natural gas, and all other fuels are stored energy from the sun. Some was collected 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 layer, and much of this energy that is directed towards 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 millionth of the sun's entire output of radiant energy.
The sun is the source of all of the following EXCEPT______.
A.gasoline
B.natural gas
C.atomic power
D.animal fat
A.stored up by the plants
B.absorbed by the earth' s atmosphere
C.stored up by the animals in the form. of body fat
D.used for electric power
A.one tenth
B.one millionth
C.all that comes from the surface of the sun
D.a very small portion
A.detailed statistics are now available
B.the news media have brought the problem to everybody's attention
C.judges are given more severe sentences
D.drivers are more conscious of their image
A drunken driver is usually defined as one with a 0.10 blood content or roughly three beers, glasses of wine or shots of whisky drank within two hours. Heavy drinking used to be an acceptable part of the American man image and judges were tolerant in most courts, but the drunken slaughter has recently caused so many well-publicized tragedies, especially involving young children, that public opinion is no longer so tolerant.
Twenty states have raised the legal drinking age to 21, reversing a trend in the 1960s to reduce it to 18.After New Jersey lowered it to 18, the number of people killed by 18 to 20-year-old drivers more than doubled, so the state recently upped is back to 21.
Reformers, however, fear raising the drinking age will have little effect unless accompanied by educational programs to help young people to develop "responsible attitudes" about drinking and teach them to resist peer pressure to drink.
Tough new laws have led to increased arrests and tests and, in many areas already, to a marked decline in fatalities. Some states are also penalizing bars for serving customers too many drinks. A tavern in Massachusetts was fined for serving six or more double brandies to a customer who was "obviously intoxicated" and later drove off the road, killing a nine-year-old boy.
As the fatalities continue to daily in every state, some Americans are even beginning to speak well of the 13 years of national prohibition of alcohol that began in 1919, what President Hoover called the "noble experiment". They forget that legal prohibition didn't stop drinking, but encouraged political corruption and organized crime. As with the booming drug trade generally, there is no easy solution.
Drunken driving has become a major problem in America because ______.
A.most Americans are heavy drinkers
B.Americans are now less shocked by road accident
C.accident attract too much publicity
D.drinking is a socially accepted habit in America
A.employment
B.employers
C.employs
D.employees
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