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In 1620,about half the U.S.A.was covered by forests.

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In 1620,about half the U.S.A.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 U.S.A.’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 kilometers long,and between 400 and 1,700 kilometers 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.英语翻译!
In 1620,about half the U.S.A.was covered by forests.
1620年,美国大约一半的土地被森林覆盖.今天,森林几乎都消失了.许多肥沃的土地也随之消失,只留下了沙子.中国不想重蹈美国的覆辙.我们正在种植越来越多的树.我们已经在我国横贯北方建立了树的“绿色长城”.绿色长城有7000千米长,400-1700千米款,它将阻止风把土地吹走.它将阻止沙子朝南方肥沃的农田移动.我们还需要更多的“绿色长城”.必须全世界种树.绿色长城将会使世界变得更好.
这是旧初中课本上的文章.
In 1620,about half the U.S.A.was covered by forests. 英语翻译In 1620，about half the USA was covered by forests.Today 英语翻译In 1620,about half the USA was covered by forests． Today In 1620,about half the USA was covered by forests.此句子对吗? In 1850,about a third of U.S.A___(be) covered by forests. △In1850,about a third of U.S.A.( )covered by forests.A.were 1.单选In 1850,about a third of U.S.A.______covered by forests. the Great Wall in Chian will be covered by forests ( ). 【英语】关于主谓一致△In1850，about a third of U.S.A.( )covered by fores The Great Green Wall in China will be covered by forests ( ） In 1620,about half of the USA___covered by forest A:are B:is About two thirds of the Earth's surface is covered by the se