Much of the water we use comes from snow. Melting snow provides water for rivers, electric power centers and agricultural crops. In the western United States, mountain snow provides up to 75% of all surface water supplies.
Snowfall helps to protect plants and some wild animals from cold, winter weather. Fresh snow is made largely of air trapped among the snow crystals. Because the air has trouble moving, the movement of heat is greatly reduced.
Snow also is known to influence the movement of sound waves. When there is fresh snow on the ground, the surface of the snow takes in, or absorbs, sound waves. However, snow can become hard and flat as it becomes older or if there have been strong winds. Then the snow's surface will help to send back sound waves. Under these conditions, sounds may seem clearer and travel farther.
Generally, the color of snow and ice appears white. This is because the light we see from the sun is white. Most natural materials take in some sunlight. This gives them their color. However, when light travels from air to snow, some light is sent back, or reflected. Snow crystals have many surfaces to reflect sunlight. Yet the snow does take in a little sunlight. It is this light that gives snow its white appearance.
Sometimes, snow or ice may appear to be blue. The blue light is the product of a long travel path through the snow or ice. In simple terms, think of snow or ice as a filter. A filter is designed to reject some substances, while permitting others to pass through. In the case of snow, all the light makes it through if the snow is only a centimeter thick. If it is a meter or more thick, however, blue light often can be seen.
小題1:How many functions of snow are discussed in the passage?
A.OneB.TwoC.ThreeD.Four
小題2:Why does snowfall help to protect plants from cold?
A.Because snow crystals contain heat.
B.Because snow crystals have air in them.
C.Because snow crystals are easy to blow away.
D.Because snow crystals send out heat when melting.
小題3:It can be inferred that ______.
A.hard snow is better in protecting wild animals than fresh snow
B.fresh snow is better in sending sound waves than hard snow
C.fresh snow is better in taking in sound waves than hard snow
D.hard snow provides less water than fresh snow
小題4:The color of snow and ice appears white because snow crystals________.
A.send back none of the sunlightB.send back all of the sunlight
C.take in most of the sunlightD.take in some of the sunlight

小題1:C
小題2:B
小題3:C
小題4:D

試題分析:本文給我們介紹了我們常見的雪的作用,及雪為什么會成白色。這里提到的它的作用有三點,一是雪給我們提供水源。二是雪能夠給野生動植物防寒。三是雪能影響聲的傳播。
小題1:這是細節(jié)理解題。根據(jù)前三自然段可知雪能提供水源,能給野生動物和植物防寒,能影響聲的傳播,故選C。
小題2:這是細節(jié)理解題。根據(jù)Fresh snow is made largely of air trapped among the snow crystals. Because the air has trouble moving, the movement of heat is greatly reduced.因為雪里有空氣,阻止熱的運動。故選B。
小題3:這是推理判斷題。根據(jù)When there is fresh snow on the ground, the surface of the snow takes in, or absorbs, sound waves. However, snow can become hard and flat as it becomes older or if there have been strong winds. Then the snow's surface will help to send back sound waves. Under these conditions, sounds may seem clearer and travel farther.因為新鮮的雪能夠吸收聲波,這就影響了聲的速度,而硬的雪有利于聲的傳播,加快了聲的速度。故選C。
小題4:這是細節(jié)理解題。根據(jù)Snow crystals have many surfaces to reflect sunlight. Yet the snow does take in a little sunlight. It is this light that gives snow its white appearance.雪的晶體有許多表面來反射陽光,雪就吸收了一些光,就是這種光讓雪成白色。故選D。
點評:推理判斷就是根據(jù)作者的意圖和傾向來完成相關的問題。 根據(jù)你對文章的理解,來判斷各個選項的正誤。最重要的就是讀懂句子的意思,找出文章的中心,這種閱讀是深層閱讀,但是你最重要的就是找出文章的中心意思,抓住主要句子和相關句子的意思就可以解決了,要注意題目中的一些關鍵詞和文章中的句子的對比,尤其是一些轉(zhuǎn)折詞、連詞等等。
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A.memorizedB.keptC.noticedD.wrote
小題2:
A.Once againB.Since thenC.Later onD.Shortly after
小題3:
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小題4:
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小題5:
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小題6:
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小題7:
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小題8:
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小題14:
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科目:高中英語 來源:不詳 題型:完形填空

A farmer found a wounded eagle (鷹) in his field. He was so   26   that he took it home and cleaned its wounds. After that he placed it  27  in the yard, in the hope that it    28    recover soon.
Strangely enough, the eagle soon got used to the    29   of all the chickens in the yard. It learned to    30    from side to side like chickens, and eat happily from a trough (食槽). For many years, the eagle    31    his new life on the farm.
Then one day, one of the farmer’s friends pointed to the playing    32   and asked, “  33   is that eagle acting like a chicken?” The farmer told him what had   34  , and the friend felt quite   35  .
“I can’t believe that!” said the friend. “It should fly in the    36   , not live here!” He picked up the eagle, and   37   it into the air. The eagle was  38  , and cried loudly. Then it just fell down on the ground.
That night, the friend could   39   sleep as he remembered the chicken-like eagle. The next morning, he headed back to the farm for another   40  . This time he carried the eagle to the   41   of a nearby mountain.
When he stood at the highest place of the mountain, he looked into its eyes and shouted, “Don’t you   42   ? You weren’t made to live like a chicken!” As he   43   the eagle up, he made sure it was facing into the bright   44   of the rising sun. Then he    45    tossed (拋) the bird into the sky. This time the eagle opened his wings, and disappeared into the clouds.
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A.foodB.soundsC.waterD.habits
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A.walkB.sleepC.talkD.drink
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A.chickenB.eagleC.farmerD.plane
小題8:
A.WhenB.HowC.WhyD.What
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科目:高中英語 來源:不詳 題型:閱讀理解

EAT YOUR VEGETABLES. Wash your hands. Always say "please" and "thank you ".We are full of advice for our children, but when it comes to money, we often have little to say. As a result, our children may grow up with clean hands and good manners, but without any idea how to manage their money.Here are some basics that will help guide them their entire lives:
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Teach patience. Suppose your child wants a new bicycle that costs $150.Rather than paying the cash, give him some regular pocket money and explain that by putting aside,say,$15 each week, he will be able to buy it for himself in only ten weeks.
Provide incentive. Tell your children the importance of saving. "For every dollar he or she agrees to save and invest rather than spend, you agree to add another dollar to the pot, "says Cathy Pareto, expert in money planning.
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小題1:The writer gives some basics to help ____ in a proper way.
A.parents teach their children how to deal with money
B.children follow their parents 'instructions
C.children manage their money
D.parents save their money
小題2:The underlined word "incentive" in paragraph 6 means ____.
A.honorB.praiseC.excitementD.encouragement
小題3:What leads the writer to write this article?
A. Parents want to know how to educate their children.
B. He wants to share his good ideas about money matters.
C .He thinks money management the most important for children.
D. Parents care  little  about their children's management of money.

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