Do you always agree with your teachers? Sometimes you might have   1 answer to a math problem from your teacher. Or perhaps they scold(责备) you when you don't think you did anything wrong.

What do you do then? A story on sina corn said that   2   students are speaking out and even arguing with their   3  . It's   4  for students to say what they think. In the past, 5 Chinese students dared(敢于) speak back to their teachers. It was an unwritten rule that teachers are  6  right. But now students are beginning to think more by themselves and dare to 7   what they want.

But students should choose the right way to speak out. You should respect teachers. They are older than you and have more   8   So, never use rude words when speaking to them. And don't make them feel bad when you do not   9   them. Try to find the right   10  to talk to your teachers. For example, discuss the problem after class.

1.    A.the same           B.a different           C.the wrong        D.a right

2.    A.again and again       B.less and less         C.over and over       D.more and more

3.    A.friends            B.parents             C.teachers                 D.classmates

4.    A.polite                 B.good               C.wrong             D.bad

5.    A.few               B.a few              C.many            D.most

6.    A.never             B.sometimes          C.hardly           D.always

7.    A.say                B.talk                C.speak             D.tell

8.    A.students            B.books              C.friends            D.experience

9.    A.like to              B.agree with           C.listen to            D.laugh at

10. A.time               B.subject             C.topic            D.student

The world is not only hungry but also thirsty for water. This may seem strange to you, since nearly 70%of the earth's surface is covered with water. But about 97%of that is sea water or salt water. Man can only drink and use the other 3%of fresh water from rivers, lakes, underground and so on. And we can not even use all of that because some of it has been made dirty.

  Earth Day is April 22. But on all other days, we must also remember how important water is. The water that we use is the most important natural resource on the earth. Today we face serious water problems. One of them is water pollution. All kinds of things from cars, factories, farms and homes make our rivers, lakes and oceans dirty. Polluted water is very bad for people to drink. And dirty water is bad for fish, too.

  How do cars and factories make our water dirty? First they pollute the air. Then when it rains, the rain water makes our drinking water dirty. Dirty rain, called acid rain(酸雨), is also bad for plants, animals and buildings. Scientists say that in 30 years, more than half of the people in the world won't have enough dean water. We have to learn how to stop wasting water. One of the first steps is to develop ways of reusing it. Today in most large cities, water i~ used only once and then sere out into a sewer system(下水道). From there it returns to the sea or goes underground.

  But even though every large city reused its water, we would still not have enough. So we should make use of sea water by removing the salt in it. If we can take these steps, fresh water won't be used up.

1. The world is thirsty for water because______.

A.we don't have enough fresh water

B.a lot of water goes into sewer systems

C.only 70% of the earth's surface is water

D.sea water is widely used rather than fresh water

2. The underlined word "face" means"______".

A.turn the face down           B.turn the face up

C.turn the face to               D.turn the face back

3. From this passage, we know acid rain________.

A.is only bad for living things

B.is not bad for buildings and factories

C.can be produced in factories

D.is bad for people, animals, plants and buildings

4. One difficult way we can solve the problem is to ______.

A.use the water with salt in it              B.remove the salt from sea water

C.get water from underground             D.reuse the water in cities

5. What is the best title for this passage?

A.Fresh water and sea water              B.A thirsty country

C.The importance of water               D.The world's water problem

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