rain v. 下雨 windy adj. 多风的,有风的 cloudy adj. 多云的,乌云密布的 sunny adj. 阳光充足的,晴朗的 how's=h——青夏教育精英家教网—

摘要：rain v. 下雨 windy adj. 多风的,有风的 cloudy adj. 多云的,乌云密布的 sunny adj. 阳光充足的,晴朗的 how's=how is Moscow 莫斯科 Toronto 多伦多 Boston 波士顿 cold adj. 冷的,寒冷的 cool adj. 凉的,微冷的,凉爽的 warm adj. 暖和的,温暖的 humid adj. 潮湿的,湿润的 Egypt 埃及 take photos 照相 ride v. 乘,骑 Egyptian adj . 动脉的,埃及人的,埃及语的 n.埃及人,埃及语 winter n. 冬天,冬季 have a good time 玩得高兴,过得愉快 Eiffel Tower 埃菲尔铁塔 Feel v.感觉,感到,觉得

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We won’t go to the Great Wall if it ___________ the day after tomorrow.

A．won’t rain

B．is raining

C．rains

D．doesn’t rain

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选词填空

other, move, enough, find ,desert, make, use
another, friend , carry , trouble, friendly

You may think there is nothing but sand in the desert of the world, but it is not true. In the desert we can   76   stones. We can see hills, too. There is a little rain in the   77  , but it is not   78  for most plants.
　　The animals are   79  to the desert people in many ways. The desert people eat the meat and drink the milk of the animals. They use their skins to    80  shoes, water bags and even tents(帐篷). They use the camels(骆驼) for   81  things.
The people of the desert have to keep    82  from places to place. They must always look for grass or desert plants for their animals. They usually live in the tents. When there is mo more food for their animals, they take down their tents, put them on the camels and move to    83  place. The desert people are very   84 . No man in the desert would ever refuse to help the people in   85  and give them food and water

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When you look up into the sky at night, have you ever felt that your eyes are playing tricks on (捉弄) you? It seems that the stars are moving all the time.
Actually, there is nothing wrong with your eyes. This twinkling effect is called scintillation (交光). Scintillation happens because of air movements in the earth’s atmosphere (大气). Light is “bent (弯曲的)” when it travels through different parts of the earth’s atmosphere. As the air in the earth’s atmosphere is moving all the time, the light from the stars looks as if it is moving too.
The same thing also happens to things on the ground. On a very hot and shiny day, if you look at the road, the image in the distance is not clear and things move slightly. You can also see the same effect if you drop a rock into water. The rock appears a little unclear under the moving water.
This twinkling effect causes a lot of problems for astronomers (天文学家) since they cannot observe the stars clearly. A telescope (望远镜) was sent into space so that the air movements in the atmosphere could be avoided (避免). It took a long time to build the space telescope but finally in 1990, a huge space telescope called the Hubble Space Telescope was successfully sent into space. Since then, astronomers have many important observations that have helped people understand space better.
根据短文内容，选择最佳选项。（10分）
【小题1】What happens to the light from the stars we see when the air in the earth’s atmosphere is moving?

A．It looks even brighter.

B．It looks as if it is bent.

C．It looks as if it is moving.

D．It looks like drops of rain.

【小题2】Scintillation also happens on 　　　　 according to the passage.