银川一中高三年级第五次月考英语试卷(5)
作者:佚名 发布时间:2018-06-29 11:36:48 本文来源于:莲山课件
  D

  Part of the ocean’s power comes from its size. All of the oceans are really big. Scientists estimate that there are about 330 million cubic miles of water in the oceans. There are four main oceans ---- the Atlantic, the Indian, the Arctic, and the Pacific. The largest and deepest is the Pacific Ocean. In fact, the Pacific Ocean is so big that if we could pick up the land on the earth, we could fit it inside this ocean.

  The movement of ocean water has a great effect on the earth, and the oceans are always in motion. Do you know that there are rivers of water flowing through the oceans? That’s right---- water flowing through water. These huge rivers of water are called currents. You can’t see currents, but as any sailor knows, you can feel them moving.

  Strong rivers of water that move close to the surface of the ocean are called surface currents. The wind and rotation (自转) of the earth create these currents.

  When the baby sea turtle makes it to the water, she will probably head for the safety of a large surface current off the coast where she was born. Here the turtle can find a good food supply while avoiding the many enemies near the shore. After floating around in this current for a few years, the turtle will grow big enough to defend herself against most predators. Then she can go back to waters near the coast.

  Surface currents are important because they can help warm or cool land. Surface currents that flow from regions near the Equator carry warm water. Those that flow from the polar regions carry cold water.

  Another kind of current found far below the surface of the water is called a deep ocean current. These currents form when very cold water meets warm water. The cold water sinks under the warm water, and this movement causes currents.

  32. The writer thinks the oceans are powerful because ____________.

  A. one of them is much bigger than the other three.

  B. they are large and constantly moving.

  C. they have two cold poles and one warm equator.

  D. they can heat up the earth.

  33. Which of the following statements is true according to the passage?

  A. Ocean currents are exactly the same as rivers on land.

  B. The movement of sea water would stop if there were no wind.

  C.A baby sea turtle cannot survive without the currents off the coast.

  D. Land owes much of its temperature change to the ocean currents nearby.

  34. From the last paragraph we can infer that a deep ocean current ________.

  A. can flow up and down. B. has no effect on land temperature.

  C. is the direct result of the wind. D. comes from the two poles.

  35. In which column of a newspaper can we find the passage?

  A. Entertainment. B. Culture. C. Education. D. Science.

[《高中生》杂志·新高考网 责任编辑:彭益]

关于我们 - 关于《高中生》杂志社 - 联系我们 - 编辑热线 - 投稿

copyright 2010-2016 中共湖南省委宣传部、湖南省教育厅主管,湖南教育报刊集团主办,《高中生》杂志社承办
ALL Rights Reserved

互联网出版许可证:新出版网证(湘)字017号 湘ICP备10000103号