阅读理解
阅读下列短文，从每题所给的A、B、C、D四个选项中选出最佳选项。
To many web building spiders, most of whom are nearly blind, the web is their basic window on the world: their means of communicating, capturing prey, meeting mates and protecting themselves. A web - building spider without its web is like a man isolated on an island of solid rock, totally out of touch and for sure to starve to death.
So important is the web to a web spider's survival that the animal will continue to construct new webs daily even if it is being straved. For 16 days the starving spider builds completely normal webs. Then, as the animal gets much thinner, it constructs a web using fewer strands. Such webs would only trap larger prey, which is more economical from the view of a starving spider.
The spider preserves energy by recycling web protein (蛋白质). It simply eats its own web each evening and re - uses it to manufacture new silk. In studies with redioactively labeled materials, it was found that 95 percent of web proten reappears in the next day's web. Most of the energy needed for web - building is used in walking over the strands (线，绳) as they are laid down.
Scientists are impressed by the adaptability of the spider's highly preprogrammed brain, which is larger for its size than the brain of any other invertebrate (无脊椎动物). If web - building is interrupted, or if some of the existing strands are destroyed, the spider simply retraces its steps to see where the web is left off and then finishes building a normal web. One spider will even finish building the incomplete web of another.
1．That a spider is able to finish an incomplete web of another proves that ________.
[ ]
A．a spider re - uses its web energy to reproduce new silk
B．spiders have a highly preprogarmmed brain
C．the web is everything to a spider
D．a spider is able to mend a destroyed web
2．A spider preserves its energy ________.
[ ]
A．because it constructs new webs daily
B．as it walks over the strands it lays
C．by eating its own web protein and then re - using it in the new web
D．by eating only in the evening
3．Without its web a web - building spider would NOT be able to ________.
[ ]
4．The underlined word “isolated” in the first paragraph means ________.
[ ]
期末冲刺100分创新金卷完全试卷系列答案科目：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
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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
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