阅读理解In1620，abouthalftheUSAwascoveredbyforests．Todaytheforestshavealmostgone．Alotofgoodlandhasgonewiththem，leavingonlysand．Chinadoesn'twanttocopytheUSA'sexample．We'replantingmorea

Question

阅读理解 　　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 the northern part of our country．The Great Green Wall is 7000 kilometers long，and between 400 and 1700 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．
(1)	In 1620，about ________ the USA was covered by forests． 　　A. a third　　B. half　　C. two thirds　　 D. a fourth [　　]
(2)	A lot of good land has gone with _________． 　　A. sand　　B. water　　C. wind　　D. forests [　　]
(3)	The Great Green Wall in China is _______ long． 　　A. 7000 kilometers B. 1700 kilometers C. 7000 meters　　D. 400 kilometers [　　]
(4)	Trees must be grown in _________． 　　A. China　　 B. the USA　　 C. some countries　　D. every part of the world [　　]
(5)	________ will make the world better． 　　A. The Great Wall　　B. Tall buildings　　C. Great Green Walls D. Flowers and grass [　　]

Answer 1

1．B ;2．D ;3．A ;4．D ;5．C ;