摘要:V.短文改错(10%) 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. In 1620 , about half the USA was cover by forests . Today the forests have almost gone . A lot of good land has gone with it , leaving only sand . China does not want to copy the USA example . We’re planting more and more tree. We’ve built the “Great Green China of trees across north part of our country . The Great Green China Wall is among 400 and 1700 kilometers wide. It will stop the wind from blow the earth away . More “Great Green Walls are be needed . Trees must be grown all over the world . They’ll make world better .

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