完形填空

　　Today more and more people live in cities. So there is usually 　1　 in a city to grow food. Most of the land in a city is used 　2　 hones, shops, roads and parks. Most food for city people is grown in the country. It is often brought to the city by 　3　, train and plane. Some food 　4　 come into the city by car.

　　Do you live in a city? If you 　5　, think of all kinds of food you eat in a day. All of the food 　6　 the country. The wheat(小麦) for your bread is grown on farm in the country, so are vegetables.

　　Water is another thing that cities get from the country. Everyone reeds water everyday. We use a little of it for 　7　. Bur we use even more to 　8　 bathtub(浴缸), run showers(沐浴) and wash streets.

　　The water used by cities comes mostly from rain. But people 　9　 not use the rain that falls on cities: The rain becomes dirty as it falls 10 dirty air.

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选择合适的短语完成句子

________when you're next in China.

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We usually drop by our friends' homes. That means________.

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A. call first before go to see friends

B. go to see friends in car

C. go to friends' homes without calling first

D. friends come to my house

　　The little island of Symi had a big party not long ago. Everyone sang and danced in the streets. Bells rang. Flags waved.

　　What was it all about?

　　For the first time, this island of Greece had its own fresh water. Women could fill their pails with all the water they wanted!

　　Very little rain falls on Symi. The people have always saved every drop they could get. But it has never been enough for their needs. They have had to buy water brought by ships.

　　Now Symi has its own “water factory. ” The factory changes salt water from the sea into fresh water that people can drink.

　　Most of the ways to turn salt water into fresh cost a lot of money. The Symi factory uses a way that costs very little.

　　What is the factory like? How does it work?

　　Right in the middle of the town are some long ponds (池塘).

　　Over each pond is a low tent. It is made of plastic that you can see through.

　　At night, sea water is pumped (抽) into the ponds. The next day, the hot sun shines through the tents. The sun's heat turns the water into vapor that rises from the ponds. The salt is left behind.

　　As it rises, the vapor becomes mist (轻雾). On the inside of each tent, the tiny drops of mist run together to make big drops. These run down the sides of the tent, filling a tank (桶) with fresh water.

　　The salt left behind in the ponds is washed out each night.Then more sea water is pumped in, The factory is, ready for the next day's work.

　　The tents and other parts of the factory cost very little. Sea water and sun cost nothing. Most people on Symi are poor. So to them this new way of getting fresh water seems wonderful!

1．The people on that Greek island held the big party because of ________ .

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A．their National Day

B．the harvest of the year

C．having fresh water of their own

D．drinking fresh water for the first time

2．From the story, we know that there might be a time for the people on the island ________ .

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A．to drink no fresh water at all

B．not to get enough fresh water as they wanted

C．to drink salt sea water most of the time

D．not to get any kind of water all their lives

3．Which of the following sentences is NOT true?

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A．The people on the island had been saving rain water.

B．The people on the island had bought water for drinking.

C．The people on the island have found many ways to make fresh water.

D．The people on the island have had a “water factory” of their own.

4．Water vapour is made in the factory by ________ .

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A．heating sea water by the sun

B．boiling sea water in the ponds

C．pumping sea water out of the ponds

D．filling the ponds with fresh water

5．________ in the ponds is washed out during the night.

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