Question

Sharks are among the oldest animals on Earth. There are hundreds of kinds of sharks. Most are about two meters long. The dogfish shark, however, is less than twenty centimeters in length. A shark has an extremely good sense of smell. It can find small amounts of matters in water, such as blood, body liquids and chemicals produced by animals. These powerful senses help sharks find their food. Sharks eat fish, other sharks, and plants that live in the ocean.

Sharks grow slowly. About forty percent of all sharks lay eggs. The others give birth to live young. 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.

Sharks are important for the world’s oceans. They eat injured and diseased fish. Their hunting activities mean that the numbers of other fish in ocean waters do not become too large. 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 because many parts of a shark are valuable. Collectors pay thousands of dollars for the jaws of a shark. Shark liver oil is a popular source of Vitamin A. 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, but some sharks are in danger of disappearing from Earth. If too many sharks in one area are killed, that group of sharks may never return to normal population levels.

1.Which of the following words best describes the situation sharks are in?

A．Good.            B．Expensive.         C．Powerful.         D．Endangered.

2.Sharks eat other fish, __________.

A．which is a threat to all other forms of life in the oceans

B．which is a protection for plants and other forms of life in the oceans

C．which helps prevent diseases from spreading

D．which helps the number of other fish to grow

3.According to the passage, many parts of a shark are valuable EXCEPT ________.

A．its jaws           B．its liver           C．shark fins          D．shark teeth

4.The author thinks that______.

A．sharks are valuable to us and we can make full use of them

B．oceans will become safer with fewer sharks swimming around

C．measures should be taken to protect sharks

D．the shark population is increasing slowly

 

Answer 1

【答案】

1.D

2.B

3.D

4.C  

【解析】

試題分析：本文主要介紹了有關(guān)鯊魚(yú)的一些情況。鯊魚(yú)的嗅覺(jué)很靈敏，鯊魚(yú)哺育孩子的方法，鯊魚(yú)對(duì)于海洋的重要性，人們?yōu)榱死�益捕殺鯊魚(yú)，鯊魚(yú)的現(xiàn)狀很危險(xiǎn)。

1.細(xì)節(jié)題：從最后一段的句子：but some sharks are in danger of disappearing from Earth. 可知鯊魚(yú)處于危險(xiǎn)的地步 ，選D

2.推理題：從第三段的句子：Sharks are important for the world’s oceans. They eat injured and diseased fish. Their hunting activities mean that the numbers of other fish in ocean waters do not become too large.可知鯊魚(yú)在海洋中很重要，它吃掉受傷和有病的魚(yú)，這維持著海洋生物鏈的平衡。選B

3.細(xì)節(jié)題：從倒數(shù)第二段的內(nèi)容Collectors pay thousands of dollars for the jaws of a shark. Shark liver oil is a popular source of Vitamin A. The skin of a shark can be used like leather.可知D想不對(duì)。

4.推理題：從最后一段的句子：If too many sharks in one area are killed, that group of sharks may never return to normal population levels.可知要采取措施保護(hù)鯊魚(yú)了。選 C  

考點(diǎn)：考查科普類短文

點(diǎn)評(píng)：本文考查較為全面合理，各種題型都有涉及。要求考生在閱讀時(shí)，把握大意，合理的進(jìn)行推測(cè)想象是很有必要的。