In1620,abouthalftheUSAwascoveredbyforests.Todaythefor...

問題詳情：

   In 1620, about half the USA was covered by forests. Today the forests have almost gone. A lot of good land has gone with them, leaving only sand. China doesn't want to copy the USA's example. We're planting more and more trees. We've built the " Great Green Wall" of trees across northern part of our country. The Great Green Wall is 7,000 kilometres long, and between 400 and 1,700 kilometres wide. It will stop the wind from blowing the earth away. It will stop the sand from moving towards the rich farmland in the south. More "Great Green Walls" are needed. Trees must be grown all over the world. Great Green Walls will make the world better。             

9. The Great Green Wall in China is ______.                                                   

A. 17,00 kilometers long B. 7,000 kilometers long C. 7,000 meters long                                            D. 400 kilometers long 10. Trees must be grown in ______.

A.  every part of the world B.  the USA C.  some countries D.  China

11 h of the following statements is not true?

Great Green Wall will stop wind from blowing the earth away. Great Green Wall will make our life better. don’t need to plant more trees. Great Green Wall will stop the sand moving towards the rich farmland.

【回答】

BAC

知識點：閲讀理解

題型：閲讀理解