阅读理解:
The sea world is divided into three main oceans, the Pacific, the Atlantic and the Indian and two smaller oceans, the Arctic or the Northern Ocean, and the Antarctic or the Southern Ocean. The Pacific is by far the largest of these, for it covers half the sea- area of the world. In addition to the oceans there are other areas of sea, such as the Red Sea, the Mediterranean, the North Sea, the Caribbean Sea (加勒比海) and the Black Sea.
The continents are entirely surrounded by what is called the “continental shelf” which slopes (倾斜) gradually to a depth of about 500 feet. This shelf is built up of sediment (沉积物) which has been brought down to the sea by the continental river. Where the land near the coast is low and flat, the continental shelf may extend thirty, forty or even more miles from the coast; where mountain ranges run parallel (平行的) to the sea and near to it ( as on the east coast of Africa), the shelf is narrowed to only a mile or two.
From the edge of the shelf the sea- bed slopes sharply downwards so that the depth of water from the surface rapidly becomes greater, down to perhaps 1,200 feet.
1.Choose a correct diagram (示意图) from the following according to the information given:
[ ]
A.
B.
C.
D.
2.Which of those is the biggest?
[ ]
3.The continental shelf is found ________.
[ ]
4.The greatest area of continental shelf is to be found ________.
[ ]
A.at a depth of 500 feet
B.near low, flat coastline
C.near mountain ranges paralleled to the sea
D.off the east coast of Africa
5.The depth of the continental shelf varies (不同,不等) from ________.
[ ]
科目:高中英语 来源:山东省实验中学2012届高三第一次诊断性考试英语试题 题型:050
|
查看答案和解析>>
科目:高中英语 来源:江西省九江一中2011-2012学年高一第一次月考英语试题 题型:050
|
查看答案和解析>>
科目:高中英语 来源:天津市十二区县重点学校2012届高三毕业班联考(二)英语试题 题型:050
|
查看答案和解析>>
科目:高中英语 来源:山东省潍坊市2012届高三5月仿真模拟考试英语试题 题型:050
|
查看答案和解析>>
科目:高中英语 来源:辽宁省东北育才学校2008-2009学年高二第一次月考英语试题 题型:054
|
查看答案和解析>>
湖北省互联网违法和不良信息举报平台 | 网上有害信息举报专区 | 电信诈骗举报专区 | 涉历史虚无主义有害信息举报专区 | 涉企侵权举报专区
违法和不良信息举报电话:027-86699610 举报邮箱:58377363@163.com