5. At the end of Tang dynasty,gunpowder was used in        (war).

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根據(jù)材料內(nèi)容選擇最佳答案。

(   ) 1. When he was inChina, Marco Polo        .

A. discovered Cai Lun invented paper

B. learned to make paper

C. saw many wonderful things

D. read a lot of books

(   ) 2. People in western countries first used paper

money in the        century.

A. 17th     B. 15th

C. 13th     D.7th

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A. 1,700  B. 2,000

C. 2,800  D.4,800

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A. To use both sides of every piece of paper.

B. To use  the paper bags from shops more than once.

C. To use cotton handkerchiefs instead of paper.

D. All the  above.

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B. The Chinese used paper money much earlier than the people in western countries.

C. About 47,600 trees  can  be  used  to make 2,800 tons of paper.  

D. It is too late to plant  trees  for  paper.  

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