题目内容
B. must be changed
C. should change
D. can be changed
Many places in the world need more fresh water. Every country is trying to find ways to turn salt water into fresh. Why aren’t there many factories like the Symi factory?
In some places the sun is not hot enough. Or it does not shine every day.
In such places other ways of heating sea water can be used. These ways cost more money, but they work faster than the sun. By boiling sea water with high heat a lot of fresh water can be made quickly.
But heating is not the only way to get fresh water from salt water. Other ways are tried.
One way is freezing. The fresh part of salt water freezes first. To get fresh water, the bits of ice are taken out.
Which way is the best? The one that gives the most water for the least money. It may be a different way for each place.
Symi’s way seems very good for small, hot places. It does not make much water at a time. But the factory is easy to build and costs little.
That is why people in many dry places talk about Symi.
【小题1】From the passage we know that fresh water _____________.
| A．is needed in many countries | B．is needed in every country |
| C．can be used in many ways | D．is very important for factories |
| A．turns salt water into fresh | B．can be built everywhere |
| C．can make much fresh water at a time | D．doesn’t need sunshine every day |
| A．Boiling the sea water. | B．Heating the sea water. |
| C．The Symi’s way. | D．Freezing the sea water. |
| A．New ways of getting fresh water. |
| B．A lot of fresh water can be made quickly by heating. |
| C．The best way is to get the freshest water with the least money. |
| D．The Symi’s way doesn’t work in dry places. |
| A．small | B．hot | C．cool | D．dry |
Once there was a king who told some of his people to dig a pond (池子).The king then told his people that one person 15 each family had to bring a glass of milk during the night and put it into the pond. So, by the morning, the pond should be 16 of milk.
After 17 the order, everyone went home. As one man prepared his milk, he thought that since everyone was bringing milk, he would just 18 a glass of water and put that into the pond instead. 19 it was dark at night, no one would notice it, so he quickly went and put the water into the pond and 20 home.
In the morning, the king went to visit the pond. To his surprise, the pond was only filled with water! What happened? Yes! Everyone had the same idea 21 that man. They all thought, “I don’t have to waste my milk. Someone else will do it.”
Dear friends, when you plan to help poor people or people in trouble, do not think that 22 will take care of it. 23 , it starts with you. If you don’t do it, no one else will, so change yourself and make a 24 .
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Right in the middle of the town are some long ponds(水池). They are only about half a foot deep. The men of Symi dug out the earth to make the ponds.
Over each pond is a low cover. It is made of glass that you can see through.
At night, sea water is taken into the ponds. The next day, the hot sun shines through the covers. The sun light turns the water into vapor(水蒸气) and the vapor goes up from the ponds. The salt is left behind.
As it goes, the vapor became mist. On the inside of each cover, the little drops of mist run together to make big drops. These drops run down the sides of the cover, filling other ponds with fresh water.
The salt left in the ponds is washed out each night. Then more sea water is taken in. The factory is ready for the next day’s work. The covers and other parts of the factory cost very little. Sea water and sun cost nothing. Most people of Symi are poor. So to them this new way of getting fresh water seems wonderful.
【小题1】 Where are the little drops made into big drops?
| A．On the inside of the covers. |
| B．In the ponds with fresh water. |
| C．On the walls of the salt water ponds. |
| D．Between the fresh water and the salt water. |
| A．in order to keep sea water |
| B．in order to get hot water inside |
| C．in order to fill them with fresh |
| D．in order to get fresh water |
【小题4】Which of the following is NOT true?
| A．The sea water is taken into the ponds at night every day. |
| B．There is a very big river running through the town to the sea. |
| C．The people in Symi can get fresh water from the factory. |
| D．People may see the water in the ponds through the cover. |
Right in the middle of the town are some long ponds(水池). They are only about half a foot deep. The men of Symi dug out the earth to make the ponds.
Over each pond is a low cover. It is made of glass that you can see through.
At night, sea water is taken into the ponds. The next day, the hot sun shines through the covers. The sun light turns the water into vapor(水蒸气) and the vapor goes up from the ponds. The salt is left behind.
As it goes, the vapor became mist. On the inside of each cover, the little drops of mist run together to make big drops. These drops run down the sides of the cover, filling other ponds with fresh water.
The salt left in the ponds is washed out each night. Then more sea water is taken in. The factory is ready for the next day's work. The covers and other parts of the factory cost very little. Sea water and sun cost nothing. Most people of Symi are poor. So to them this new way of getting fresh water seems wonderful.
1. Where are the little drops made into big drops?
A. On the inside of the covers.
B. In the ponds with fresh water.
C. On the walls of the salt water ponds.
D.Between the fresh water and the salt water.
2.The men of Symi dug some long ponds .
A. in order to keep sea water
B. in order to get hot water inside
C. in order to fill them with fresh
D. in order to get fresh water
3.Which picture shows the right way to get fresh water in Symi?
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4.Which of the following is NOT true?
A. The sea water is taken into the ponds at night every day.
B. There is a very big river running through the town to the sea.
C. The people in Symi can get fresh water from the factory.
D. People may see the water in the ponds through the cover.