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

 

--- Thanks to the Great Green Wall, my hometown is getting more and more beautiful.

A．Thanks for

B．With the help

C．Because

D．Because of

 

用所给动词的适当形式填空
【小题1】How about _________ (eat) some Beijing Duck?
【小题2】I hope it_________ (not rain) tomorrow.
【小题3】Can your sister ________ (sing) the song in English?
【小题4】He _________ (try) to use a knife to open the door, but he failed at last.
【小题5】It’s not easy_________ (work) out this maths problem.
【小题6】We are looking forward to _________ (receive) your letters.
【小题7】----Millie, please tell your brother not to cross the road, it is dangerous.
----Thank you. I __________(ask) him to be careful.
【小题8】One of the red key rings_______(belong) to Millie.
【小题9】Why not ________(visit) the Great Green Wall next month?
【小题10】Look! He with his parents ________ (lie) on the grass.

Thanks _______the Great Green Wall, the land produces more food.

A． for

B．to

C．of

D．by

①Forests help to keep water from running away, so drought does not often happen. The trees in the forests can keep raindrops from hitting the soil directly, and the dead leaves on the ground can also keep the water from running away.②

Chinese people don’t want to see more floods and droughts. We have built the “ Great Green Wall” of trees across the northern part of our country.③ Thanks to the “ Great Green Wall”, we can prevent the wind from blowing the earth away. It will stop the sand from moving towards the rich farmland. That’s why more “ Great Green Walls” are needed. Trees must be planted all over the world.④

根据短文内容，从题中所给的A、B、C、D四个选项中，选择最佳答案。（10分）

1. “Great Green Wall will make the world better.” This sentence should be put in      .

A．①

B．②

C．③

D．④

2.       can help to keep water from running away.

A．Rain

B．Forests

C．Sand

D．Land

3. The reason of building “ Great Green Wall”is        .

A．to make the city beautiful

B．to move the sand

C．to stop the sand from moving towards the rich farmland.

D．to stop the rain from hitting the soil directly.

4. We have built the “ Great Green Wall” of trees        of China.

A．in the east

B．in the west

C．in the south

D．in the north.

5.From the passage, we can know which is wrong.

A．We must plant more trees.

B．We have to protect our environment.

C．“Great Green Wall” project is very beneficial to us.

D．It is not necessary that trees must be planted all over the world.