Believe it or not，oceans and seas are easy to be harmed by the development of human society．There are also influenced by man﹣made pollution easily．It is human beings that do great harm to the ocean ecosystem．

The coral reefs （珊瑚） of fine ecosystems that provide food and protection for many ocean creatures（生物）．The quarrel in almost all the oceans is in danger for pollution．Chemicals from factories end up in the seas and oceans and destroy（破坏） coral reefs．If the coral system die，some ocean creatures will be sure to die out．

Protecting the ocean also has something to do with the protection of ocean wildlife like dolphins．The fishing industry depends on modern ways to catch many fish in order to earn more money．But net for fishing also catch other sea animals．The fishing boat workers are advised to check their nets and set other ocean animals free．But the boats are in a hurry to make money and often other ocean animals are caught with fish．

Oil spills can destroy the ocean environment because of oil kills all ocean life．The world depends on oil and because there is plenty of oil off the shore in many countries．The need for you is more important than the risk of the oil spill．However，the fact is that one ocean mistake can lead to an ocean environment accident that will cause years of damage to the financial ecosystems．Or use bills will kill all the creatures in the area of the spill．The oil will be washed up on the shore and destroy ecosystems along the shore，including birds．

Everyone who cares about the environment should pay more attention to protecting the ocean，and all of us should do something for the protection of the ocean．

61．According to the passage，the ocean is harmed easily as a result of 　　．

A．the overuse of the oceans

B．the change of natural conditions

C．the growth of population by the sea

D．the activities of humans

62．What does the second paragraph mainly tell readers？　　

A．the importance of protecting coral systems．

B．Coral reefs are home to ocean animals．

C．The great harm caused by factory pollution．

D．How ocean creatures depend on coral reefs．

63．Why do people continue to get oil in the sea at the risk of oil spills？　　

A．Because they believed all you still can be stopped．

B．Because there is plenty of oil in the sea．

C．Because they are in great need of oil

D．Because getting oil in sea is easier than on land．

64．What does the underline word "damage" mean？　　

A．混乱

B．损害

C．灾难

D．误导

65．This passage is written mainly to tell us 　　．

A．many ocean creatures are in danger now

B．oceans can provide us with a great deal of oil

C．the sea has been seriously polluted

D．something should be done to protect the oceans．