Clouds（) much of the sun's heat back into space, making the earth cooler,

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• In many areas “atoll” clouds (clouds of vertical development) are produced over small islands. These are the result of（）.

  A . rising air currents produced by the warm islands B . warm air from the sea rising over higher land areas C . cool land air mixing with warm sea air D . descending air over the island

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• An amplitude of the Sun in high latitudes（）.

  A . is most accurate before sunrise B . is most accurate after sunset C . should only be observed when the Sun's lower limb is above the horizon D . is most accurate when the Sun's center is observed on the visible horizo

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• What are the symptoms of sun stroke?（）

  A . Temperature falls below normal，pulse is rapid and feeble，skin is cold and clammy B . Temperature is high，pulse is strong and rapid，skin is hot and dry C . Temperature is high，pulse is slow and feeble，skin is clammy D . Temperature falls below normal，pulse is rapid，skin is clammy

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• Clouds appearing in the following order: cirrus，cirrostratus，altostratus，stratus，and nimbostratus usually indicate the approach of a(n)（）.

  A . warm front B . occluded front C . medium front D . cold front

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• If the sky was clear，with the exception of a few cumulus clouds，it would indicate（）.

  A . rain B . hurricane weather C . fair weather D . fog setting i

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• The inner cloud bands of a hurricane，when viewed from a distance，form a mass of dense，black cumulonimbus clouds called the（）.

  A . bar of the storm B . eye of the storm C . funnel D . front

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• The eye of a hurricane is surrounded by dense black cumulonimbus clouds which are called the（）.

  A . Wall cloud B . Nimbostratus cloud C . Bar D . Funnel

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• The presence of stratus clouds and a dying wind will usually result in（）.

  A . heavy rain B . heavy snow C . thick fog D . clearing skie

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• All of the following are associated with cumulonimbus clouds EXCEPT（）.

  A . steady rainfall B . hail storms C . thunderstorms D . tornadoes or waterspout

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• A cloud sequence of cirrus，cirrostratus，and altostratus clouds followed by rain usually signifies the approach of a(n)（）.

  A . occluded front B . stationary front C . warm front D . cold front

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• Techniques to employ the energy of the sun are being developed.

  A . convert B . store C . utilize D . receive

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• In the end of the plane _____ into the clouds.

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• Sun Bin was the founder of Sunzi School.

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• The doctor told Penny that too much ________ to the sun is bad for the skin.

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• Sun Wu was the founder of Sunzi School.

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• The earth is not the only【C1】______that travels around the sun. With it are eight other planets, fellow members of the sun's family.

  Two of them are【C2】______while the other six【C3】______from the sun than the earth is. The farther they are, the longer【C4】______they【C5】______around the sun. People noticed long ago that these traveling bodies moved around in the sky【C6】______definite paths. It is a【C7】______called gravity that【C8】______them in their paths. We know that every little bit of matter in the【C9】______pulls upon every other bit of mater. The pull between two bodies is【C10】______to the product of their masses. Because the sun is so large that pulls【C11】______the sun and the planets are thus great. If it【C12】______not for these pulls, the planets【C13】______off into space. In the same way【C14】______exists a pull between the earth and the moon, which keeps the moon【C15】______in its orbit around our planet, the earth. The gravity holds you to its surface, and pulls back to it the ball which you【C16】______into the air. Of course the ball also pulls【C17】______the larger earth, but the earth is so much larger that the pull【C18】______. Now remember that large bodies exert a greater pull on any body than smaller ones which contain【C19】______material. But each object in the universe, no matter how small, pulls on all other objects【C20】______extent. 【C1】 A．thing B．body C．matter D．substance

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• Protect yourself from strong sunlight. You know,skin cancer can be caused by too much ________ the sun. [ ] A. contact with B. experiment on C. exposure to D. exhibition of

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• Only a small part of the sun's energy reaches the earth's surface because most of it is______.

  A．absorbed by the clouds in the lower atmosphere B．reflected by the gases in the upper atmosphere C．lost in the upper and lower atmosphere D．used to evaporate water from the oceans and lakes

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• We know much about the universe. It means the earth, the sun, the moon and the stars, and the space __21__ them.

  Most of the stars are much bigger than the moon, but they look smaller __22__ they are far away from the earth. At night, the moon is high in the sky like a light. But the moon has no light of its own . The light of the moon __23__ the sun. The sun gives us light, heat and life. And the plants, animals and men will die without the sun. The earth is going round itself __24__. When the part of the earth turns to the sun, it is day. The __25__ part of the earth is night. The earth is our homeland. We should love it. 21)、 A.because B.comes from C.between D.opposite E.all the time 22)、 A.because B.comes from C.between D.opposite E.all the time 23)、 A.because B.comes from C.between D.opposite E.all the time 24)、 A.because B.comes from C.between D.opposite E.all the time 25)、 A.because B.comes from C.between D.opposite E.all the time

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• Morning clouds lifting out of the Longwood valley______obscure the highest mountain in the region.

  A．part B．partial C．partially D．partiality

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• Techniques to employ the energy of the sun are beingdeveloped.

  A. convert B. store C. utilize D. receive

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• In England, people often talk about the weather because they an experience four seasons in one day In the morning the weather is warm just like in spring.An hour later black clouds come and then it rains hard The weather gets a little cold.In the late afternoon the sky will be sunny, the sun will begin to shine, and it will be summer at this time of a day.In England, people can also have summer in winter, or have winter in summer.So in winter they can swim sometimes, and in summer

  sometimes they should take warm clothes.When you go to England, you will see that some English people usually take an umbrella or a raincoat with them in the sunny morning. but you should not laugh at them.If you don't take an umbrella or a rain coat, you will regret later in the day. 6.People in England often talk about the weather，because the sky is sunny all day.() A.T B.F 7.From the story we know that when black clouds come，there is a heavy rain.() A.T B.F 8.The sentence “People can also have summer in winter.”means “it is sometimes too warm in winter.”() A.T B.F 9.In the sunny morning some English people usually take a raincoat or an umbrella with them because their friends ask them to do so.() A.T B.F 10.The best title for this passage is Summer or Winter in England.() A.T B.F

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• The start of the Chinese lunar year is based on the cycles of the sun. （)

  是 否

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• The pilot increased the altitude of the airplane in order to avoid the rain clouds（）

  A．number B．speed C．weight D．height

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