Ocean fishing accounts for 80% of the world fish catch.The other 20% comes from inland fishing (5%) and other source (15%).95% of all ocean catches occurs in coastal waters.1/4 to 1/3 of the world’s ocean fish catch is used to feed animals.Oceans h

Ocean fishing accounts for 80% of the world fish catch.The other 20% comes from inland fishing (5%) and other source (15%).95% of all ocean catches occurs in coastal waters.1/4 to 1/3 of the world’s ocean fish catch is used to feed animals.Oceans h
Ocean fishing accounts for 80% of the world fish catch.The other 20% comes from inland fishing (5%) and other source (15%).95% of all ocean catches occurs in coastal waters.1/4 to 1/3 of the world’s ocean fish catch is used to feed animals.
Oceans have always been an important and reliable source of food.Considering the ocean’s vast size in comparison to land,it is easy to assume that we could never deplete its resources.Recently,overuse of the ocean by man has led to the decline in population of some commercially caught fish.Overfishing,is a real problem that does not have an easy solution.
Signs of overfishing include:speeding growth rates (because of decreased competition within the species),earlier sexual maturity（成熟）,and gaps in generations.Older fish get caught first,and younger fish react by maturing faster.
What is the real danger in overfishing?
The depletion of one species affects the entire food chain.Bigger fish depend on smaller fish for food.Without a stable source of food,the larger fish suffer.Populations of smaller fish will increase,because they lack competition for the medium sized fish.Changes in those population can,in turn,effect other species all together.
Over the past 10 years a number of fish stocks have been destroyed.These include the Peruvian anchovy,Alaskan Pollack,North Sea cod,South African anchovy,Alaska king crab,and California sardine.
Canada has banned cod fishing off Newfoundland because of overfishing.This area used to be one of the world’s richest sources of cod.Overfishing drove cod populations so low,that further fishing wou ld have driven the species to near extinction（灭绝）.
It is estimated（统计）that 90% of the world’s fisheries are overfished.
53）What is the best title for this article?
A.The dangerous sea B.Fish in danger C.Save ocean lives D.Reducing species
54）What does the word “deplete” in Paragraph 2 mean?
A.kill B.reduce C.pollute D.ban
55) Which of the following statements is NOT true?
A.Most fish are caught near the land area.B.Some fish are used for animal food.
C.the North Sea used to be rich in cod.D.Canadian cod has disappeared.
56) We can infer that ________________.
A.Canada has the worst overfishing problem.B.ban on fishing is an effective solution
C.small fish feed on sea plants D.inland fishing will be encouraged

Ocean fishing accounts for 80% of the world fish catch.The other 20% comes from inland fishing (5%) and other source (15%).95% of all ocean catches occurs in coastal waters.1/4 to 1/3 of the world’s ocean fish catch is used to feed animals.Oceans h
B
B
D
A