第六部分：完形填空

　　阅读下面的短文，文中有15处空白，每处空白给出了4个选项，请根据短文的内容从4个选项中选择1个最佳答案。

　　What We Take from and Give to the Sea

　　As long as we have been on earth, we have used the sea around us. We take from the ocean, and we give to it.

　　We take fishes from the ocean - millions of kilograms of fish, every year, to (51) millions of people. We even (52) their bones for fertilizer. We take minerals from the ocean. One way to get salt is to (53) seawater in shallow basin and leave until it evaporates(蒸发). Along with salt, other minerals are left (54) evaporation. Much gold and silver drift dissolved in the waters of the sea, too. But the sea does not give them (55) by simple evaporation. (56) gifts from the sea are pearls, sponges(海绵) and seaweed. Pearls (57) jewelry. Natural sponges become cleaning aids. Seaweed becomes (58) of many kinds - even candy, and ice cream - as well as medicine. Believe it or not, fresh water is another (59) from the sea. We cannot drink ocean water. Some of its contents may (60) illness. But ocean water becomes fresh water when the salts are (61). In the future, we will find ourselves (62) more and more on fresh water from the sea.

　　The sea (63) us food, fertilizer, minerals, water, and other gifts. What do we give the sea? Garbage. We pollute the ocean (64) we use it as a garbage dump. Huge as it is, the ocean cannot hold all the water that we pour into it. (65) garbage into the ocean is killing off sea life. Yet as the world population grows, we may need the sea and its gifts ,ore than ever.

　　51.A.feed B.attract C.save D.affect

　　52.A.buy B. Treat C.have D.use

　　53.A.flow B.place C.pour D.throw

　　54.A.before B.until C.after D.for

　　55.A.up B.in C.away D.over

　　56.A.Such B.All C.Another D.Other

　　57.A.change B.become C.make D.turn

　　58.A.material B. Item C.product D.food

　　59.A.source B.gift C.thing D.matter

　　60.A.cure B.cause C.experience D.catch

　　61.A.done B.removed C.dried D.made

　　62.A.costing B.working C.paying D.depending

　　63.A.gives B.gets C.teaches D.obtains

　　64.A.if B.when C.although D.because

　　65.A.Reducing B.Collecting C.Removing D.Casting

　　答案：

　　A D B C A

　　D B D B B

　　B D A B D