阅读理解
阅读下列短文，从每题所给的四个选项(A、B、C和D)中，选出最佳选项。
Have you ever noticed, when looking at a map of the world, that the east coast of South America and the west coast of Africa look as though they might fit together? If you have, you are not alone. In 1965 the English scientist Sir Edward Bullard used a computer to test the fit of the two continents and found that at an ocean depth of 2,000 metres the match was very close indeed.
It seems too remarkable to be possible, but there is a lot of evidence (证据) to suggest that Africa was once joined to South America. For example, there is a belt of ancient rocks along the east coast of Brazil which is similar to the rocks across the South Atlantic in West Africa.
There is further evidence that existing land masses were once linked. The remains of a 400-to-500-million-year-old mountain chain has been found running down the eastern part of Greenland, western Scandinavia, and through north-west Scotland and Ireland, into western Canada, eventually finding their way to north-west Africa.
Then there is the evidence from life itself. In various parts of the world today the same animals and plants can be found on land masses separated by, in some cases, thousands of miles of oceans. Did they develop at the same time in two different places? It seems unlikely. Biologists believe that there must have been land bridges which have now sunk beneath the sea. Also fossils (化石) found in sedimentary rocks (fossils are the preserved remains of life forms) have allowed geologists to trace the same plants from South America, and Antarctica (北极) in rocks perhaps 300 million years old.
The ice that is now confined to (限制) the polar regions (北极或南极地区) has not always been so limited in extent. Indeed, during a period of the Earth's history known as the permocar-boniferors age (二叠石炭纪) about 250-350 million years ago there is evidence from the rocks that there were glaciers covering South America, parts of Africa, India, Australia, as well as Antarctica. On the other hand, in the northern hemisphere (北半球), there were deserts. If the continents spread out as they are today, it is hard to understand how this could be.
So there is considerable evidence to show whole continents moved apart, and naturally many people have tried to discover how and why whole land masses moved.
1．How many proofs does the author give in this passage?
[ ]
2．The underlined part “…eventually finding their way to north-west Africa.” means ________.
[ ]
A．the mountain chain goes from the eastern part of Greenland to north-west Africa
B．it is a long way from the eastern pad of Greenland to north-west Africa
C．we can also find these remains in north-west Africa
D．we can find a way from the eastern part of Greenland to north-west Africa
3．What does the underlined word “glaciers”most probably mean?
[ ]
4．Which of the following is NOT true according to the passage?
[ ]
A．There are deserts in the northern hemisphere.
B．We can find the same animals and plants on the two continents.
C．We can find the same remains of a 400-to-500-million-year-old mountain chain.
D．The same animals and plants developed at the same time in two different places.
5．Which would be the best title for this passage?
[ ]
A．The History of the Earth
B．The Movement of the Two Continents
C．The Continental Drift (漂流)
D．The Evidence of the Continental Drift
小学期末冲刺100分系列答案
期末复习检测系列答案
超能学典单元期中期末专题冲刺100分系列答案
黄冈360度定制密卷系列答案科目：高中英语 来源： 题型：053
阅读理解
In the 1940s, Pinehaven Park was one of Crafton City's loveliest recreation(娱乐)areas. Over 40 acres of woods and fields were open to the public. In the 1950s, part of the park was taken over by Crafton City's garbage. Fifteen acres were to be used for landfill disposal(理置). As time went on, more and more of the park was used for garage disposal and less for recreation. Two years ago, the park was closed to the public for good. Along with household garbage, industrial chemicals had for years been dumped (倾倒)in the Pinehaven landfill. These poisonous chemicals had begun to seep(渗)back up through the soil. All of Pinehaven Park had become dangerously polluted.
Last year, the fish in the Crafton River began to die. After a series of investigations(研究), it became clear that the people of Crafton City were not to blame. 100～150 miles upstream, big paper mills were dumping industrial wastes into the river. Little by little, the level of poison in the river began to rise. Finally, it became so polluted that the fish themselves could no longer survive.
Downtown Crafton used to be a quiet area. Ten years of remarkable growth changed that in a big hurry. But with Crafton City's new prosperity(繁荣)came a new problem: air pollution. And it is a serious problem. Air pollution levels in Crafton are regularly reaching those of the nation's large industrial cities.
(1)Which of the following best states the central idea of the passage?
[ ]
A．Chemical dumping is a serious threat to Crafton City's soil.
B．The rapid growth of industry has brought air pollution to Crafton City.
C．The disposal of garbage can destroy recreation areas.
D．Industrial growth and progress have resulted in the pollution of Crafton City's water, air, and soil.
(2)According to the passage, what portion of the park had originally been marked for use as a garbage dump?
[ ]
A．Less than half B．Exactly half
C．About one third D．Most of it
(3)As it is used in the passage, the phrase“for good”means ________.
[ ]
A．practically B．for ever
C．thoroughly D．advantageously
(4)According to the passage, one result of dumping industrial chemicals into the landfill was that ________.
[ ]
A．the land became unsafe for humans
B．the animals on the land died
C．the poisonous chemicals were washed into the nearby river
D．the smoke from the chemicals polluted the air surrounding the landfill
查看答案和解析>>
科目：高中英语 来源：四川省绵阳中学2009－2010学年高一下学期入学考试英语试题 题型：050
| |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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
