同步测试
一.用所给词的适当形式填空
1.Come to school in ______ old clothes tomorrow. (you)
2.About half of the USA was ____ by forests. (cover)
3.The more, the ___- .(good)
4.People have planted a large number of trees in the _____ part of China. (north)
5.The old farmer is _______ his horse to the tree. (tie)
6.More vegetables should be ______ in the village. (grow)
7.The river is ten meters _____ than that one. (deep)
8.Grandpa _____ flowers every morning. (water)
9.The railway is ____ of kilometers long. (million)
10.Look. How _____ the little girl is dancing! (wonderful)
(1.your 2.covered 3.better 4.northern 5.tying 6.grown 7.deeper 8.waters 9.milliona 10.wonderfully)
二.选择填空
or, away, knock, take, so that, make sure, save, build, copy. push
1.How far ___ is Australia from China?
2.____ that you will be free next Sunday.
3.China does not want _____ the USA’s example.
4.Great Green Walls must ____ all over the world.
5.The Great Green Wall has already ______ a lot of farmland.
6.Trees should _____ good care of.
7.Go to bed early ______ you can get up early tomorrow morning.
8.I _____ a stick into the earth at that time.
9.Work harder _____ you won’t pass the exam.
10.______the earth down hard with your foot several times.
(1.away 2.Make sure 3.to copy 4.be built 5.saved 6.be taken 7.so that 8.was knocking 9.or 10.Push)
三.阅读短文，根据内容选择适当的答案
The Indians breathe thin air. The air goes up for thousands of miles. The higher the air goes up, the thinner it gets. Thin air is hard to breathe.
People who go up into high mountains often get dizzy. Breathing the thin air makes them dizzy.
A man is flaying more than 15,ooo feet above the sea. The air is very thin. Is the man dizzy? No. He is breathing oxygen from a tank.
In south America, Indians live far up on the mountains. Their homes are more than 15,000 feet above the sea. The Indians are not breathing oxygen from a tank. But they do not get dizzy. They have lived in these mountains all their lives. Their lungs have changed. They have become large. The large lungs help the Indians breathe the thin air.
Sometimes the Indians go down to the low country, People living down there feel fine. But the Indians feel sick.
( )1.What does the sentence “The higher the air goes up, the thinner it gets.”mean?
A.It means that you can get thin air when you are tall enough.
B.It means that the air in a high place is as thin as that in a low place.
C.It means that the air vecomes thinner in a higher place.
( )2.Why so people often get dizzy when they go up ;into high mountains?
A.Because they are too tired./
B.Because there is less oxygen in the air.
C.Because their lungs becomes smaller.
( )3.Mountain Indians can breathe thin air because______.
A.they have larger lungs than common people.
B.they need less oxygen than common people.
C.they are much stronger than common people
( )4.From the passage we know_____.
A.it is hard for all the people to breathe thin air.
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