Many people think that water will never be used up（用尽）because there are many rivers and lakes. And the rain can make us get enough fresh water. Also, we can dig wells（井）to find fresh water under the ground. In fact, it is wrong and dangerous to think so. In some areas, people fight（争斗）for fresh water. There is little rain there all year round. Let’s look around us. Some factories pour（倒）dirty water into rivers. And some people drop litter into rivers. We see polluted water here and there. We must do something to help people understand about preventing water from being polluted. It’s never too late if we take action right now.
小题1:Fresh water is from .
A．rivers and lakes
B．rain
C．wells
D．A, B, and C小题2:It’s dangerous and wrong to .
A．get enough fresh water
B．think water is endless
C．dig a well
D．use up water小题3:What do people fight for in some areas?
A．Fresh water.
B．Little rain.
C．Pouring dirty water.
D．Money.小题4:What’s the main idea?
A．Water will never be used up.
B．How to find fresh water.
C．Water is everywhere.
D．Shortage（短缺）of fresh water.