完形填空.Sc 完形填空. Scientists are trying
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完形填空.Sc
完形填空. Scientists are trying to make the desert into good land again.They want to bring 1 to the desert, so people can live and grow food. They are 2 a lot about the desert.But 3 of the earth is becoming desert all the time,scientists may not be able to 4 .the deserts. Scientists think that people make deserts. People are doing 5 things to the earth. Some places on the earth don't get 6 . But they still don't become deserts.This is _ 7 _ some green plants are growing there. Small green plants and grass are very 8 to dry places.Plants don't let the wind blow the earth away.When 9 _ bit of rain falls, the plants hold the water. 10 plants, the land can become a desert much more easily. | |||
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