1、What We Take from and Give to the SeaAs 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 min
2、erals 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.
3、(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
4、 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 oc
5、ean (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.affect52.A.buy B. Treat
6、 C.have D.use53.A.flow B.place C.pour D.throw54.A.before B.until C.after D.for55.A.up B.in C.away D.over56.A.Such B.All C.Another D.Other57.A.change B.become C.make D.turn58.A.material B. Item C.product D.food59.A.source B.gift C.thing D.matter60.A.cure B.cause C.experience D.catch61.A.done B.removed C.dried D.made62.A.costing B.working C.paying D.depending63.A.gives B.gets C.teaches D.obtains64.A.if B.when C.although D.because65.A.Reducing B.Collecting C.Removing D.Casting
