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Our world is becoming_____________．

A．smaller and smaller       B．small and small       C．little and little

Did you know that each day one person in the US throws away 4.4 pounds of rubbish? Almost every month，we throw away our own rubbish in packaging alone．Packaging（including boxes，bags，etc）comes to our homes with the things we have bought．Several weeks ago，the TV news said that in a city in Italy tons of rubbish were piled up in the streets，and the smell was rather terrible．What can we do to help? We should get to know the following Rs．

Reduce   To reduce means to make less rubbish．That is one of the first things we all should do for the environment．Reduce your rubbish by doing things like packing your lunch in reusable containers（可再利用的容器），taking smaller potions（份）at dinner so you don't waste food when you have had enough，writing on both sides of paper，and using less water when taking a shower．

Reuse      To reuse is to use things again．Think about the bags you get from the store．They can be reused to carry your lunch，to hold your rubbish，or to collect used cans．You can even take them back to the store the next time to carry your things instead of getting a new bag!

Recycle（回收利用）  Recycling is an important part of keeping our planet clean and green．It can also save energy．Be sure that you don't throw things in the rubbish that can be recycled to make something else．Paper，plastic，cans and bottles can all be recycled，but food，electrical waste and mobile phones can't．When you are not sure whether something can be recycled，go to your parents and teachers for advice．

Follow the three Rs，and every one of us can do something to save the earth．It is also the best way to save ourselves．

1．The first paragraph of the passage implies（暗示）that                     ．

A．packaging should be given up                       B．Italy is too dirty for us to visit

C．the US produces most rubbish                            D．the earth is becoming dirtier

2．If you want to reduce，you should                ．

A．make good use of your paper                       B．take a bath instead of a shower

C．eat a small dinner every day                         D．pack your lunch with newspapers

3．The writer seems to ask people to reuse the bags                 ．

A．only as rubbish bags                                          B．only for carrying other things

C．mainly to have a cleaner world                     D．mainly to save some money

4．Which of the following can be recycled?

A．Food and bottles．                                  B．Books and newspapers．

C．Paper and mobile phones．                          D．Plastic and electrical waste．

5．The passage mainly tells us that                   ．

A．all useless things can be recycled

B．the environment is greatly improving

C．the three Rs can help us clean the earth

D．we should never throw any rubbish away