一、词汇运用
1. The river is important to us, but it (flood) whenever it rains heavily.
2. The ocean is (most) made up of salt water, covering over 70% of the Earth's surface.
3. A forest, especially a rainforest, (produce) lots of oxygen and helps cool the temperature.
4. In the past, the living (condition) in Wuxi were not as good as they are now.
5. The forest is also a (power) place, full of natural forces.
6. Sea turtles have to swim long distances to find food and safe places to (生存) in the big ocean.
7. Usually, there is a shortage of (淡的) water in deserts.
8. After walking for hours in the Taklamakan Desert, they found (没有什么) but cacti and dry land.
9. More trees should be planted every year to stop the wind and the (沙子).
10. The Changbai Mountains are located in the (北方的) part of China.

floods
mostly
produces
conditions
powerful
survive
fresh
nothing
sand
northern

() 1.The big plain lots of corn, which is also used to feed farm animals.

A.protects
B.practices
C.prepares
D.produces

D

() 2. of the land of the Turtle Head Isle covered with trees and grass.

A.Two third; is
B.Two third; are
C.Two thirds; is
D.Two thirds; are

C

() 3.The Sahara is a big desert that it's hard to see the end.

A.so
B.such
C.too
D.quite

B

() 4. tall mountain Mount Tai is, reaching high into the sky!

A.What a
B.How
C.How a
D.What

A

() 5.— I called you last night, but answered. Where were you then?
— I was walking my pet dog along the Beijing-Hangzhou Grand Canal.

A.anybody
B.somebody
C.everybody
D.nobody

D

() 6.Hello, I have two faces. I give life, but when I flood, I sometimes destroy homes and lives. Who am I?

A.Ocean.
B.Desert.
C.River.
D.Forest.

C

() 7.At the top of a high mountain, there's very oxygen in the air.

A.a little
B.little
C.a few
D.few

B

() 8.The fallen tree got when I was hiking through the forest, but I managed to climb over it.

A.in my way
B.on my way
C.by my way
D.to my way

A

() 9.The rainforest tall trees that reach for the sky.

A.cares for
B.is home to
C.is full of
D.holds up

C