13. China's population is much       (large) than that of America.

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7. 他對項目的成功作出了巨大的貢獻。(make a great contribution)

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Recycling is a way to change waste materials into new products, so that they can be used more than once.

Quite a lot of materials can be recycled， such as plastics，glass，paper，electronics(電子器件)and so on. There are many used items made of these materials in our everyday life， like soda cans,water bottles, newspapers, and old computers.

Recycling, in fact,is not a simple process and it is different for each type of material. For example, to start recycling paper, people will mix it with water and some chemicals to break it down. In this way, the paper will be turned into pulp(紙紫).Then the glues or plastics will be removed from the pulp. After that,it gets cleaned to remove any' inks or dyes(染料). Now the pulp is ready to be made into new paper.

However, computers and batteries are usually recycled in order to remove harmful chemicals as well as to find again some useful materials such as gold.

Do you know the recycling symbol? It has three arrows(箭頭)，which stand for three different steps in the recycling process. First, collect recyclable materials. Second, process the old materials and make new items. Third, buy items made from recycled materials.

閱讀短文,選擇最佳選項。

(   ) 1. TTie purpose of recycling is to      

A.  make more new products

B.   use waste materials again

C.   make waste materials disappear

D.  use new products more often

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A. Books. B. Plastic bags.

C. Fruit skins. D. Telephones.

(   ) 3. The underlined phrase " break down” probably means      

A.分解         B.消除

C打斷         D.分類

(   ) 4. Which of the following is TRUE?

A.  Old paper can be made into" new paper very easily.

B.   All materials can be recycled in the same way.

C.   There are harmful chemicals in used batteries.

D.  Gold can be found in turning paper into pulp.

(   ) 5. The third arrow in the recycling symbol encourages us to      

A.  buy waste materials

B.   make recyclable materials

C.   learn about processing the old materials

D.  use products made from recycled materials

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2. The study of English has been very popular with Chinese people.

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14.       (化學)was her favorite subject at school.

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8. You ought to tell us the____________ ( mean) of this sentence.

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10. Do you know how the greenhouse effect      (產(chǎn)生）？

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