Question

【题目】 Sharks have been around for hundreds of millions of years. 【1】 Some sharks live near the surface, some live deep in the water, and others on or near the ocean floor.

Sharks are often considered dangerous. We sometimes read about shark attacks in the newspapers. In 1975, the film Jaws was produced and many people were frightened by the great white shark which attacked holiday-makers in a small seaside town in the USA. 【2】 It can reach 6 meters in length and up to 2,000 kilograms in weight. It has as many as 3,000 sharp teeth, so it can cut a man’s leg with a single bite.

【3】 The pigmy shark, for example, is only about 20 centimeters in length. There are almost 400 kinds of sharks and more than half of these are less than a meter in length. The biggest sharks of all are not dangerous to humans at all. The basking shark and the whale shark grow to around 12 meters. 【4】

Only about 25 kinds are dangerous to people. Of these the bull shark is the one that is most likely to attack people. 【5】 Less than one hundred people are attacked by sharks each year. Indeed, you are far more likely to be killed by a dog or by bees than by a shark, and some scientists believe that sharks only attack people because they mistake them for their favorite food.

A.But none of them has been reported to have attacked people.

B.But not all sharks are like the great white.

C.It swims in very shallow waters where people swim.

D.A shark is a large fish considered to be dangerous to humans.

E.The great white is certainly a terrible creature.

F.They live in oceans and seas all over the world.

G.We can never imagine such things can happen.

Answer 1

【答案】

【1】F

【2】E

【3】B

【4】A

【5】C

【解析】

本文介绍了鲨鱼有好多种，但是不会所有的鲨鱼都攻击人类，有的鲨鱼攻击人类是因为他们把人类误认为是它们的食物。

【1】根据上文“Some sharks live near the surface, some live deep in the water, and others on or near the ocean floor.”可知，鲨鱼生活在海洋里，故选F。

【2】根据上文“…many people were frightened by the great white shark which attacked holiday-makers…”可知，大白鲨袭击人类，说明大白鲨很可怕，故选E。

【3】根据下文中举例中“The biggest sharks of all are not dangerous to humans at all.”可知，最大的侏儒鲨对人类一点也不危险，由此推断上一句讲的是，不是所有的鲨鱼都像白鲨一样会袭击人类，故选B。

【4】根据本段讲的是不是所有的鲨鱼都袭击人类，前面的例子讲的是长得小的侏儒鲨，后面讲的是可以长到12米左右的姥鲨和鲸鲨，为了前后呼应，说明他们也不伤人，故选A。

【5】根据上文“Of these the bull shark is the one that is most likely to attack people.”可知，20种袭击人类的鲨鱼中，公牛鲨可能性最大，接下来需要给出理由，因为它在人类游泳的浅水区域游。故选C。