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(水蒸氣) 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.
小題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.
小題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
小題3:Which picture shows the right way to get fresh water in Symi?

小題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.

小題1:A
小題1:D
小題1:C
小題1:B

小題1:根據(jù)第二行的第一段On the inside of each cover可知，水蒸氣在玻璃內(nèi)側(cè)形成大的水滴。故選A。
小題1:根據(jù)最后一段的最后一行可知，這是一種新的、經(jīng)濟(jì)的獲取淡水的方法。人們挖水池是為了獲取淡水。故選D。
小題1:水蒸氣變成水滴后會(huì)下落，A、B、D三幅圖中，水滴會(huì)重新落入海水中，不能獲得淡水。而C項(xiàng)所示的是，水滴流到外側(cè)，再流進(jìn)其它的池子里。故選C。
小題1:根據(jù)第一段的第四行可知，A項(xiàng)正確；根據(jù)最后一段可知，C項(xiàng)正確；根據(jù)第一段的第三行“...you can see through”可知，水池上面用玻璃覆蓋，人們可以看到水池里面，D項(xiàng)正確。故選B。
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A．a(chǎn) few years ago, there was no pollution at all.
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