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A、By good sense of water waves made by quarries. B、By good sense of smell and electrical magnetic power. C、By good sense of ligh
A、By good sense of water waves made by quarries. B、By good sense of smell and electrical magnetic power. C、By good sense of ligh
admin
2013-06-02
33
问题
Scientists say sharks have lived in the world’s oceans for millions of years. Scientists say there are more than 350 different kinds of sharks.
Sharks do not have bones, and a shark has an extremely good sense of smell. It can find small amounts of substances in the water, such as blood, body liquids and chemicals produced by animals. Sharks also sense electrical and magnetic power linked to nerves and muscles of living animals. These powerful senses help them find their food. Some sharks will eat just about anything. Many unusual things have been found in the stomachs of some tiger sharks. They include shoes, dogs, a cow’s foot and metal protective clothing.
About forty percent of the different kinds of sharks lay eggs. The others give birth to live young. Some sharks carry their young inside their bodies like humans do.
Scientists are beginning to understand the importance of sharks to humans. Medical researchers want to learn more about the shark’s body defense system against disease. They know that sharks recover quickly from injuries. Sharks appear never to suffer infections, cancer or heart diseases.
选项
A、By good sense of water waves made by quarries.
B、By good sense of smell and electrical magnetic power.
C、By good sense of light.
D、By good sense of blood.
答案
B
解析
细节题。鲨鱼找到猎物的方式出现在以下句子中:A shark has an extremely good sense of smell. (鲨鱼有出色的嗅觉)和Sharks also sense electrical and magnetic power linked to nerves and muscles of living animals.(鲨鱼是依靠电磁波来寻找猎物的。)答案是B。
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0
大学英语六级
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