1.买东西时，请你带自己的袋子。

Please       your own bags when       

Taking away a city's rubbish is a big job. Every day trucks come into a city to collect it. Most rubbish is made up of things we can't eat or use. If we kept these things，we would soon have a mountain of rubbish.

In some cities the rubbish is collected and taken outside of city to a dump. Often the city dump is placed where the ground is low or there is a big hole. The kitchen rubbish is broken into small pieces and sent into the sewage system. The sewage system takes away the used water from toilets,bathtubs and other places.

To keep mice and flies away,some earth is used to cover the newly dumped rubbish. Later,grass may be planted on the rubbish-filled land. Finally,a house or a school may be built there,and then you'd never know that this had once been an old rubbish dump.

In other cities the rubbish is burnt in special places. The fire burns everything but the metal. Sometimes the metal can be used again in factories where things are made of metal. The food parts of rubbish are put in special piles where they slowly change into something called humus(腐殖质) ，which looks like black earth. It is rich with the kinds of things that feed plants and help make them grow.

(   ) 1. You can most probably read the passage in         .

   A. a science book   B. a TV guide   C. a history book   D. a telephone book 

(   ) 2. The underlined word " sewage" in the passage means "        ”.

   A.污水一   B.染色C洗涤   D.吸尘

(   ) 3. According to the passage,the food parts of rubbish can be used again .

   A.to feed animals

   B.to feed plants

   C.to build a house

   D.to make machines

(   ) 4. How should we take care of a used metal box according to the passage?

   A.By burning it off.

   B.By putting it in water.

   C.By throwing it away.

   D.By reusing and recycling it.

Electricity is one thing2      we waste most. Lights,TVs, 3       and other things are often kept on even when no one is using them. We should turn them off when we do not need them. It 4       less than a second to do it. Anyhow，not wasting electricity saves money? because we do not have to 5       the electricity we do not use.

The second thing that we often waste is water. Fresh water is precious, 6       it shouldn't be wasted. It is only a simple matter to turn off the tap. I am sure 7       can do this easily if he wants to.

8       big waste is food. My mother 9       cook so much food that much of it was thrown away. I told her we had wasted so much 10       . She thought I was right and now cooks11       what we can eat.

It is not 12       to be wasteful. I find there is a simple 13      of not wasting things. That is to use only what we 14      . Do not touch what we do not need. 15      this way,we can stop being wasteful. 

(   ) 1.A. use   B. wash

   C.  waste   D. forget

(   ) 2.A. what   B. that

   C.  whose   D. who

(   ) 3.A. radios   B. apples

   C.  bikes   D. doors

(   ) 4.A. brings   B. costs

   C.  keeps   D. takes

(   ) 5.A. afford   B. save

   C.  pay for   D. care for

(   ) 6.A. though   B. because

   C.  so   D. but

(   ) 7.A. nobody   B. something

   C.  everybody   D. nothing

(   ) 8.A. Others   B. Other

   C.  Another   D. The other

(   ) 9.A. planned to   B. used to

   C.  was able to   D. was afraid to 

(   ) 10.A. electricity   B. water

   C.  food   D. money

(   ) 11.A. mainly   B. only

   C.  mostly   D. specially

(   ) 12.A. right   B. fine

   C.  bad   D. necessary

(   ) 13.A. way   B. thing

   C.  plan   D. project

(   ) 14.A. buy   B. need

   C.  bring   D. get

(   ) 15.A. On   B. In

   C.  For   D. At

(   ) 10. —Can you find our city       a lot in recent years? 

―Yes. The road is wider and the buildings are taller.

 A.has changed   B. changes   C. changed   D. will change

(   ) 9. If there         no buying and selling of animals there will be no killing in nature.

   A. is   B.will be

   C.  has   D. will have

(   ) 8. If we         take environmental problems seriously，the earth        worse and worse.

   A. don't  will be   B. won't;isn't   C. won't;is   D. don't  won't be

(   ) 7. UNICEF was        in 1946. It works to help children live a  better life.

   A. set up   B. put up

   C.  picked up   D. turned up

(   ) 6. The old house is very dangerous. It must      

   A. pull down   B. be pulled down   C. be pulled up   D. pull up

(   ) 5. The fence        used soda cans.

   A. built out of B，  is building with   C. is built out of   D. is built by

(   ) 4, Do you often         things you don't need anymore?

   A. throw back   B. throw at   C. throw away   D. throw into