题目内容

It can be inferred from the passage that which of the following is true of bears？

A. They are particularly resourceful.
B. They must enter human habitats in order to survive.
C. They cannot tolerate human food.
D. They eat voraciously throughout the winter.
E. They have only one method of obtaining food.

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假设j表示经济对环境的影响，P表示人口，A表示消费水平，T1表示线性经济的技术，T2表示循环经济的技术，则循环经济的经济方式可用公式表示为()。

A. I＝P×A×T
B. I＝(P×A)／T2
C. I＝(P×A)／T1
D. I＝(P×T2)／A

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The author of the passage is primarily concerned with presenting

A. a description of cultural differences
B. an overview of animal behavior
C. a history of international tourism
D. evidence to refute a global theory
E. an account of animal cruelty

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SEXTANT : NAUTICAL ::

A. octet : musical
B. therapy : physical
C. forceps :surgical
D. comet : astronomical
E. blueprint : mechanical

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The primary purpose of the passage is to

A. offer a comparison between television programming and real-world events
B. describe the conditions under which a bear will enter human habitats
C. explain the different means by which bears secure nutritious food
D. discuss new evidence concerning the difficulty of controlling bears
E. resolve a controversy surrounding the foraging behavior. of bears

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It can be inferred from the passage that which of the following is true of bears？

A. They are particularly resourceful. B. They must enter human habitats in order to survive. C. They cannot tolerate human food. D. They eat voraciously throughout the winter. E. They have only one method of obtaining food.

假设j表示经济对环境的影响，P表示人口，A表示消费水平，T1表示线性经济的技术，T2表示循环经济的技术，则循环经济的经济方式可用公式表示为()。

The author of the passage is primarily concerned with presenting

SEXTANT : NAUTICAL ::

The primary purpose of the passage is to

A. They are particularly resourceful.
B. They must enter human habitats in order to survive.
C. They cannot tolerate human food.
D. They eat voraciously throughout the winter.
E. They have only one method of obtaining food.