题目内容
阅读下列短文，从每题所给的四个选项(A、B、C和D) 中，选出最佳选项。
A
How young com办zrs (美洲狮) leam to hunt is one of the things cougar researchers like Mark Elbroch are working hard to figure out. “We know nothing about their secret lives' Elbroch says. He and his team track cougars deep in the Wyoming wilderness.
An adult called F51 was one of the cougars they kept (标签) on —they followed her using the satellite signal from her electronic collar. One fall when Elbroch discovered that F51 had given birth to four kittens — three females and a male —he put expandable tracking collars on them too,so he could follow them as they grew.
About one week after they were bom,their eyes opened. Their fur was thick enough to blanket them from the oncoming cold winter. Their brown and black spots could mix with the forest,helping to keep them safe from (食肉动物) .
By the time they were five weeks old the four kittens were restless to leave their home. They'd still be nursed for another month,but they were ready to go out of their hideaway with their mother. They began to learn their way around Mom's territory(领地). As they grew older and stronger,they learned how to search for food by following their mother,watching her select an animal to approach,and observing how she caught the animal.
While they were only a few weeks old,Mom would tell her kittens to hide when she hunted. Sometimes she has to travel a couple of miles to find'meal. “The minute she makes the kill,she hides it and heads back for the kittens,and they follow her to the kill site,” Elbroch says.
But the kittens learned that sometimes meal plans change quickly. In February and March,wolves chased F51 and her kittens away from six different kills. During the cold winter,one kitten disappeared” probably a victim of wolves,and another didn，t survive the bitterly cold weather.
Luckily F51 was able to provide plenty of food for her two remaining kittens. She shares her territory with another female,and they are friendly with each other. F5Ts kittens have learned that cooperation is a choice. “We have seen females get together and share food”’Elbroch says. “F51 spent three or four months sharing almost every kill with an unrelated female and her kittens."
1.Why did the researchers put tracking collars on the four kittens?
A. To prevent them getting lost.
B. To keep track of their growth.
C. To come to their rescue in time.
D. To learn how they master survival skills.
2.The spots on cougars’ bodies serve the purpose of .
A. protection B. decoration
C. communication D. identification
3.The underlined word “restless” in Paragraph 4 probably means.
A. safe B. unwilling
C. afraid D. anxious
4.When F51 killed an animal,she would.
A. enjoy it herself
B. share it with her kittens
C. hide it in her own home
D. ask other females for help
5.This text mainly deals with cougars'.
A. determination B. intelligence
C. toughness D. friendliness
A篇(自然)
本文是记叙文。文章讲述了一只成年美洲獅与其幼崽的生存法则。
1. D. 细节理解题。由第一段中的How young cougars learn to hunt is one of the things cougar researchers …及第二段中的 he put expandable tracking collars on them too,so he could follow them as they grew可知，给美洲狮幼崽脖子上佩戴项圈是为了观察它们如何学习捕猎，也就是如何掌握生存技能的。
2. A. 推理判断题。由第三段中的Their brown and black spots could mix with the forest,helping to keep them safe from predators可知，这些棕黑色的斑点与森林的颜色融合，可以保护美洲狮免受其他食肉动物的袭击。.3. D. 词义猜测题。由划线词下文中的 They'd still be nursed for another month,but they were ready to go out of their hideaway with their mother 可知，这些美洲狮幼崽应该是“急切地”想出去捕猎。
4. B. 细节理解题。由倒数第三段中的 The minute she makes the kill,she hides it and heads back for the kittens,and they follow her to the kill site 可知，F51捕到猎物后，会叫来自己的孩子们一起分享食物。
5. C. 主旨大意题。本文主要讲述了美洲狮在森林里与不同的对手抗衡捕猎的过程，由此可以推断文章主要描述了它们的坚毅。
