四、阅读短文，从方框中选出能填入文中空白处的最佳选项，选项中有两项为多余选项
People call the earth the “Water Planet”. That's because the ocean covers over 70 per cent of the earth.
C
It helps us in many ways.
The ocean is like the earth's lungs (肺).
E
Also, the ocean takes in 50 times more carbon dioxide (CO₂) than our atmosphere (大气层).
There are some canals (运河) that connect rivers to the oceans. By using these canals, people can move things from one country to another.
D
Thanks to the canals, you can have all kinds of chocolate from other different countries.
F
It takes in and stores heat from the sun. Then the ocean water carries that heat around the earth. Without oceans, the earth would be an icy rock. Also, by water around the earth, the ocean helps keep places from getting too hot or too cold.
Besides, the ocean gives us different kinds of food.
B
We need to protect the ocean well.
A. This is usually faster than moving things by plane.
B. We can enjoy lots of seafood and vegetables.
C. The ocean is very important.
D. It is easy to send things by canal.
E. It makes over half of the world's oxygen.
F. The ocean also keeps the earth warm.
G. The ocean is the biggest part of the earth.
1.
C
2.
E
3.
D
4.
F
5.
B
