MostofthesandstormsthathadsweptChinalastyearcamefromfor...

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Most of the sandstorms that had swept China last year came from foreign land，a Chinese official in charge of desertification（荒漠化） control said on Monday. And the invasions(入侵)could partly explain the frequent sandstorms in the country in recent years despite its achievements in desertification control.

Since the start of last spring，the north and northwestern Chinese areas had been hit by 17 sandstorms，of which，a dozen came from foreign land.

Located in the centralAsia sandstorm area，one of the world's four largest sandstorm sources，China also suffers from sandstorms from outside the country while being blamed as a sand source to northeast Asia. The other three major sources are in Africa，North America and Australia.

The land suffering from desertification has been decreasing by 7,585 square kilometres annually in China，and the area of sandy land has also been falling by 1,284 square kilometres a year.

The shrinkage(收缩)forms a clear contrast to the fact that the land suffering from desertification and sandy feature was added by 10,400 square kilometres and 3,436 square kilometres late last century，respectively.

Currently，the desertification land in China makes up 2.64 million square kilometres，accounting for 27.46 percent of the nation's land，and its sandy land totals 1.74 million square kilometres，accounting for 18.1 percent of the country's total.

8．What does the underlined word “decreasing” mean in Paragraph 4?

A．Going down.　　　　　 B．Going up.

C．Coming from. D．Taking up.

9．Where do most of the sandstorms in China come from?

A．The northwestern Chinese areas. B．The northern Chinese areas.

C．The western part of China. D．Foreign countries.

10．Which of the following is believed to be the sand source to northeast Asia?

A．Mongolia. B．Africa. C．China. D．Australia.

11．What can we infer from this passage?

A．The land in China suffering from desertification has been increasing greatly.

B．China has made achievements in its own desertification control.

C．The desertification land makes up nearly half of China's territory(领土).