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North American back bears are shy animal...

North American back bears are shy animals. They are fearful by nature, and will usually run away if they see or hear people. Because of this, it can be difficult for scientists to learn about these animals.

In order to study black bears, researchers from New Jersey, USA, catch bears and use drugs to help them go to sleep. Researchers then work out the size and the weight of the bear, take blood to test for diseases(疾病), remove a tooth and take it to the lab to find out its age. From these studies, researchers want to find out how many bears live in New Jersey, how long they live, and how many babies they produce.

But in Minnesota, USA, researchers study bears that are completely awake. The bears know the researchers' voices and they are not afraid of die research team. With the help of a few grapes to keep the bears busy, researchers can touch them to check their hearts, look at their teeth, and do other jobs. Researchers can also walk or sit with bears for hours and make videos to learn about their everyday lives.

In both places, the main purpose is the same—to make sure there is a healthy population of black bears. But the research methods and the kinds of information that researchers, are able to collect arc quite different.

1.In the first paragraph, we can learn that North American black bears are _______.

A. shy and fearful animals      B. not found today

C. well known to scientists      D. not afraid of people

2.The word "remove" in the second paragraph probably means _____ in Chinese.

A. 拔下   B.移植    C. 清洗     D. 修补

3. Which of the following may NOT be included in the New Jersey studies on bears?

A. The age.        B. The way of their communication.

C. The weight.    D. The number of babies they produce.

4. In the Minnesota studies, researchers _____.

A. can never get close to the bears

B. study the bears while they are asleep

C. use grapes to make the bears full

D. learn a lot about the bears' everyday lives

5.What do the two studies have in common?

A. Research places.   B. The main purpose.

C. Research methods.    D. Collected information.

 

1.A 2.A 3.B 4.D 5.B 【解析】 试题分析:本文介绍北美黑熊,及这种熊的生活习性。希望通过研究了解在新泽西的北美熊数量、它们的存活时间和诞生宝宝的数量。 1.细节理解题。根据第一段前两句话North American back bears are shy animals. They are fearful bynature, and will usuallyrun away if they see or hear people.可知答案为A。 2.词义猜测题。文章划线部分单词所在句子译为“拔下一颗牙齿来研究他们的年龄。”故选A。 3.细节理解题。根据第二段第二句话Researchers then work out the size and the weight of the bear,take blood to test for diseases, remove a tooth and take it to the lab to find out its age.“调查者们然后计算出实验需要的血型和血的数量,取下一颗牙齿并拿到实验室以此推测他们的年龄。”可知答案为B。 4.细节理解题。根据第三段最后一句话Researchers can also walk or sit with bears for hours and make videos to learn about their everyday lives.“调查者们还可以和这些熊一起行走闲坐数小时并制作录像来理解它们每天的生活。”可知答案为D。 5.细节理解题。根据最后一段第一句话In both places, the main purpose is the same—to make sure there is a healthy population of black bears.“在这两个地方,主要目的是一样的,都是为了确保可以得到一个健康数量的黑熊。”可知答案为B。 考点:科普类短文阅读。
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Listen before you buy

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