Sharks have lived in the world's oceans for millions of years. 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. These powerful senses help them find their food.   【小題1】 
Sharks grow slowly. About forty percent of the different kinds of sharks lay eggs.  【小題2】  Some sharks carry their young inside their bodies as humans do. Some sharks are not able to reproduce until they are twenty years old. Most reproduce only every two years. And they give birth to fewer than ten young sharks. For this reason, over-fishing of sharks is of special danger to the future of the animal.
 【小題3】 .They eat injured and diseased fish. Their hunting activities mean that the numbers of other fish in the ocean do not become too great. This protects the plants and other forms of life that exist in the oceans.
People hunt sharks for sport, food, medicine and their skin. Experts say the international market for some kinds of sharks has increased greatly because many parts of a shark are valuable.  【小題4】 . Shark liver oil is a popular source of Vitamin. The skin of a shark can be used like leather. In Asia, people enjoy a kind of soup made from shark fins. Experts say a fisherman can earn a lot of money for even one kilogram of shark fins.
Sharks are among the oldest animals on Earth.   【小題5】  If too many sharks in one area are killed, the group of shark may never return to normal population levels

A．The others give birth to live young.
B．Sharks are important for the health of the world's oceans.
C．This is a threat to other form of life in the ocean.
D．Collectors pay thousands of dollars for the jaws of a shark.
E. Sharks are valuable to us and we can make full use of them.
F. But some sharks are in danger of disappearing from Earth.
G. Sharks eat fish, other sharks, and plants that live in the ocean


【小題1】G
【小題2】A
【小題3】B
【小題4】D
【小題5】F

解析試題分析：文章介紹了鯊魚的種類，生活習(xí)性，對海洋的重要性，還介紹了由于大量的捕殺，一些鯊魚面臨消失的危險。
【小題1】考查句意理解和上下文：根據(jù)上文：These powerful senses help them find their food.可知鯊魚吃海底的魚其他鯊魚和植物，答案是：G
【小題2】考查句意理解和上下文：根據(jù)上文：About forty percent of the different kinds of sharks lay eggs.可知其他的生小鯊魚，答案是：A
【小題3】考查句意理解和上下文：根據(jù)下文：They eat injured and diseased fish. Their hunting activities mean that the numbers of other fish in the ocean do not become too great.可知鯊魚對海洋世界的健康是重要的，答案是：B
【小題4】考查句意理解和上下文：根據(jù)上文：Experts say the international market for some kinds of sharks has increased greatly because many parts of a shark are valuable.可知收藏者花費上千美元買鯊魚的下顎，答案是：D
【小題5】考查句意理解和上下文：根據(jù)下文：If too many sharks in one area are killed, the group of shark may never return to normal population levels
可知但是一些鯊魚面臨消失的危險，答案是：F
考點：考查信息匹配

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