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Not so long ago, a sailor sailing across...

Not so long ago, a sailor sailing across the cold waters of the northern Pacific Ocean might have had every chance of being confronted by a sea cow. This cow would have measured 10 meters long, and weighed between five and ten tones. And it would spend most of its day cruising the seas, eating grass growing underwater. The cow in question was known as Steller’s sea cow, which is now extinct.

Today, many people are unaware that such an extraordinary creature once existed, or don’t know its incredible story. But scientists have discovered many fundamental facts about this mystical animal.

Surprisingly, the first recorded sighting of a Steller’s sea cow didn’t happen until 1741, when a sailing expedition was stuck on an uninhabited island, later named Bering Island. The sailor survived by hunting and eating the huge sea cow. Like its modern relatives, the sea cow lived in herds. That and its slow-moving behaviour made it easy to be caught.

Those sailors that escaped Bering Island spread word of the bounty(大量) of meat to be found off its shores. As a result, more and more expeditions came to hunt the animals. One report stated that one sea cow could feed 33 men for a month.

Incredibly, just 27 years after the island and species had been discovered by modern man, the last sea cow was reported killed. That makes the Steller’s sea cow one of the few truly large mammals known to have been driven extinct in the modern age.

1.Which of the following words can be used to describe the Steller’s sea cow?

A. Huge.B. Fierce.C. Aggressive.D. Mild.

2.The underlined word “That” refers to the fact that ________.

A. the sailor escaped Bering Island

B. the sea cow was a kind of social animal

C. more expeditions came to hunt the sea cow

D. one sea cow could feed 33 men for a month

3.In which year did the Steller’s sea cow become extinct?

A. In 1741.B. In 1768.C. In 1785.D. In 1876.

4.What is the main idea of the passage?

A. Why did expeditions hunt the Steller’s sea cow?

B. When did the Steller’s sea cow become extinct?

C. How did the Steller’s sea cow become extinct?

D. What do we know about the Steller’s sea cow?

 

1.A 2.B 3.B 4.C 【解析】 试题分析:本文叙述“the Steller’s sea”是怎样绝迹的。 1. 推理判断题。根据第一段第二句This cow would have measured 10 meters long, and weighed between five and ten tones.可知,the Steller’s sea cow是巨大的。故选A。 2. 词义猜测题。根据上句:像它的现代亲戚一样,海牛以群体生活。它的群居生活和行动缓慢使它很容易被抓住。故可知划线单词指的是“海牛是群居动物”。故选B。 3. 计算题。根据第三段第一句Surprisingly, the first recorded sighting of a Steller’s sea cow didn’t happen until 1741(在1741年发现Steller’s sea cow)和最后一段第一句Incredibly, just 27 years after the island and species had been discovered by modern man, the last sea cow was reported killed.最后一头Steller’s sea cow在27年后被杀死,可知1768年Steller’s sea cow灭绝,故选B。 4. 主旨大意题。根据最后一段Incredibly, just 27 years after the island and species had been discovered by modern man, the last sea cow was reported killed. That makes the Steller’s sea cow one of the few truly large mammals known to have been driven extinct in the modern age.可知,最后一头sea cow被杀死,那就使Steller’s sea cow在现代绝迹。可知本文叙述的是“the Steller’s sea是怎样绝迹的”?故选C。 【学法指导】 计算题 数字计算题往往涉及多处信息,这就要求学生要处处留心、斤斤计较,方能解答正确。31.5.Surprisingly, the first recorded sighting of a Steller’s sea cow didn’t happen until 1741,在1741年发现Steller’s sea cow和最后一段第一句Incredibly, just 27 years after the island and species had been discovered by modern man, the last sea cow was reported killed.最后一头Steller’s sea cow在27年后被杀死,可知1768年Steller’s sea cow灭绝,故选B。 考点:考查科普类阅读
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