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2010年高考英语阅读填空题·江苏卷
文章作者:未知    文章来源:高考英语网    点击数:   更新时间:2010-09-04
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2010年高考英语阅读填空题·江苏卷

 

江苏卷的任务型阅读与湖南的阅读填空极为相似。请看2010年江苏卷的任务型阅读题:

请认真阅读下列短文,并根据所读内容在文章后表格中的空格里填入一个最恰当的单词。

注意:请将答案写在答题卡上相应题号的横线上。每个空格只填1个单词。

For more than twenty years scientists have been seeking to understand the mystery of the “sixth sense” of direction. By trying out ideas and solving problems one by one, they are now getting closer to one answer.

One funny idea is that animals might have a built-in compass(指南针).

Our earth itself is a big magnet(磁体). So a little magnetic needle that swings freely lines itself with the big earth magnet to point north and south. When people discovered that idea about a thousand years ago and invented the compass, it allowed sailors to navigate (航海) on ocean voyages, even under cloudy skies.

Actually the idea of the living compass came just from observing animals in nature.

Many birds migrate twice a year between their summer homes and winter homes. Some of them fly for thousands of kilometers and mostly at night. Experiments have shown that some birds can recognize star patterns. But they can keep on course even under cloudy skies. How can they do that?

A common bird that does not migrate but is great at finding its way home is the homing pigeon. Not all pigeons can find their way home. Those that can are very good at it, and they have been widely studied.

One interesting experiment was to attach little magnets to the birds’ heads to block their magnetic sensejust as a loud radio can keep you from hearing a call to dinner. On sunny days, that did not fool the pigeons. Evidently they can use the sun to tell which way they are going. But on cloudy days, the pigeons with magnets could not find their way. It was as if the magnets had blocked their magnetic sense.

Similar experiments with the same kind of results were done with honeybees. These insects also seem to have a special sense of direction.

In spite of the experiments, the idea of an animal compass seemed pretty extraordinary. How would an animal get the magnetic stuff for a compass.

An answer came from an unexpected source. A scientist was studying bacteria that live in the mud of ponds and marshes. He found accidentally little rod-like bacteria that all swam together in one direction—north.

Further study showed that each little bacterium had a chain of dense particles inside, which

proved magnetic. The bacteria had made themselves into little magnets that could line up with the earth’s magnet.

The big news was that a living thing, even a simple bacterium, can make magnetite. That led to a search to see whether animals might have it.. By using a special instrument called magnetometer, scientists were able to find magnetite in bees and birds, and even in fish. In each animal, except for the bee, the magnetic stuff was always in or closer to the brain.

Thus, the idea of a built—in animal compass began to seem reasonable.

The Magnetic Sense—The Living Compass

Passage outline

Supporting details

The existence of the earth magnet and the invention of the navigating compass

Our earth is a big magnet and a little freely (71)________ magnetic needle lines itself with the earth magnet to point north and south.

(72)________ on the idea above, the navigating compass was invented.

The possibility of birds’ built-in compasses                      

One piece of evidence is the (73)________ of many birds between their summer homes and winter homes.

Birds can recognize star patterns on clear nights and keep on course (74) ________ under cloudy skies.

The (75)________ on pigeons’ and bees’ built-in compasses   

Little magnets were tied to the pigeons’ heads to (76) ________ their magnetic sense.

The pigeons’ magnetic sense seemed to be affected on (77) ________ days.

Similar things with the same results were done with bees.

The (78) ________ of the magnetic stuff for the animal compass

Little rod-like bacteria were found by chance to swim together in the direction of (79) ________.

Some animals had a chain of dense magnetic particles in or close to the (80) ________ inside their bodies.

参考答案

71. swinging

72. Based

73. migration

74. even

75. experimentstestsstudyresearch

76. block

77. cloudy

78. discovery

79. north

80. brain(s)

 

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