We must have water to live.If the water we use is not clean and fresh,it can make us _____.The animals that live in and around lakes and rivers must have clean water.Large cities need _____ water.Some cities get water from wells.Some get water from lakes or rivers _____.But some cities have to get water from lakes or rivers far away.
We usually bring water to a city from a place higher than the city _____.When we find water is in the _____ place, we must pump up to a city .We build dams in a river to keep the water from _____ away.People know _____ water they need,so if there is ______ water,they will allow it to run away from the dam.______,the city can keep water for its use.
There is usually _____ near the dam.People do much important work there.For example ,they test the water before it goes to the city.
We must make the water clean _____we drink it.We must take away something from it and put something into it .It is safe for people _____it.
In modern hotels,we usually find _____taps.One is for cold water,_____is for hot water ,and the third is for iced water.
We can't make water in a factory.Once we make water dirty ,it is hard to make it clean and safe .We must learn to _____the water we now have.
1.A.healthy B.ill C.happy D.strong
2.A.lot of B.less C.fewer D.a lot of
3.A.nearby B.near C.by D.near to
4.A.it B.itself C.its D.it's
5A.higher B.deeply C.lower D.dry
6.A.to run B.run C.running D.runs
7.A.how much B.how often C.how soon D.how long
8.A.a little B.many too C.much too D.too much
9.A.On this way B.In this way C.In the way D.By this way
10.A.a building B.a worker C.a factory D.a village
11.A.as soon as B.in front of C.after D.before
12.A.drink B.to drink C.drinking D.to be drunk
13.A.three B.many C.third D.some
14.A.the other B.second C.another D.the one
15.A.stop use B.look around C.find D.take care of