introduced fishing restrictions to protect fish stocks in the oceans and new techniques are being pioneered to cope with pollution.Finally，the importance of protecting oceans is being made known to more people.This is just the beginning of a long process to protect the oceans for our future.We depend on the oceans for fish which are an important part of the human diet.How important sea water is!

　　【语篇解读】　海洋对我们人类的生存起到至关重要的作用，但是人类在很长一段时间内对海洋造成了污染和破坏，现在各国都在努力采取措施保护海洋。

　　1．Which of the following is the proper order of the food chain?

　　A．small animals→algae→microscopic animals→large animals→man

　　B．algae→microscopic animals→large animals→larger animals→man

　　C．small animals→algae→large animals→microscopic animals→man

　　D．microscopic animals→algae→large animals→larger animals→man

　　【解析】　细节理解题。根据第三段内容可知，微生物吃海藻，然后逐次地大一点的动物吃小一点的动物，最后被人吃掉。故选B。

　　【答案】　B

　　2．People used to think that the rubbish thrown into the sea ________．

　　A．wouldn't harm the fish in the sea

　　B．would change the balance of the food chain

　　C．would be broken down in the sea

　　D．wouldn't do much harm to the sea

　　【解析】　细节理解题。根据第四段第二句可知，过去人类认为将垃圾倒入大海不会对大海造成破坏。

　　【答案】　D

　　3．From the passage，we learn that ________．

　　A．most fish and sea animals live at the surface of the seas

　　B．it is very difficult to break the balance of a food chain

　　C．excessive fishing has caused the decrease in fish stocks

D．it won't be long before the problems concerning oceans will be solved