Question

【題目】 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】

本文介紹了鯊魚有好多種，但是不會所有的鯊魚都攻擊人類，有的鯊魚攻擊人類是因為他們把人類誤認(rèn)為是它們的食物。

【1】根據(jù)上文“Some sharks live near the surface, some live deep in the water, and others on or near the ocean floor.”可知，鯊魚生活在海洋里，故選F。

【2】根據(jù)上文“…many people were frightened by the great white shark which attacked holiday-makers…”可知，大白鯊襲擊人類，說明大白鯊很可怕，故選E。

【3】根據(jù)下文中舉例中“The biggest sharks of all are not dangerous to humans at all.”可知，最大的侏儒鯊對人類一點也不危險，由此推斷上一句講的是，不是所有的鯊魚都像白鯊一樣會襲擊人類，故選B。

【4】根據(jù)本段講的是不是所有的鯊魚都襲擊人類，前面的例子講的是長得小的侏儒鯊，后面講的是可以長到12米左右的姥鯊和鯨鯊，為了前后呼應(yīng)，說明他們也不傷人，故選A。

【5】根據(jù)上文“Of these the bull shark is the one that is most likely to attack people.”可知，20種襲擊人類的鯊魚中，公牛鯊可能性最大，接下來需要給出理由，因為它在人類游泳的淺水區(qū)域游。故選C。