Question

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.

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．7,000 kilometers	B．1,700 kilometers
C．7,000 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

【答案】

1.B

2.D

3.A

4.D

5.C

【解析】

1.細節理解題，根據文中語句“In 1620, about half the U.S.A. was covered by forests.”理解可知。在1620美國的一半領土被森林所覆蓋，故選B。

2.細節理解題，根據文中語句“Today the forests have almost gone. A lot of good land has gone with them,”理解可知。良田隨著森林的消失而消失，故選D。

3.細節理解題，根據文中語句“The Great Green Wall is 7,000 kilometers long, and between 400 and 1,700 kilometers wide.”理解可知。中國的綠色長城大約有7000公里長，故選A。

4.細節理解題，根據文中語句“Trees must be grown all over the world.”理解可知。樹木的缺乏是整個世界所面臨的問題，故選D。

5.細節理解題，根據文中語句“Great Green Walls will make the world better.”理解可知。建造防護林能改變現在的森林覆蓋率的現狀。