What is the situation about thedesertification in Africa?

A．The deserts are replaced withgrasslands

B．The deserts are expanding

C．the deserts are moving northwards

D．the deserts are being deserted

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1 The word “deteriorated ” in paragraph2 means ___.

A．deepened

B．suffered

C．slipped

D．worsened

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2 What is the root causeof desertification?

A．poor farming

B．overpopulation

C．radical climate change

D．disappearance of rare plant species

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3 In order to prevent desertification,the author proposes ___.

A．making good use of international aids

B．developing a sustainableagricultural economy

C．gaining international support

D．converting agricultural land intoforest

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