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
查看答案
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
SEXTANT : NAUTICAL ::
A. octet : musical
B. therapy : physical
C. forceps :surgical
D. comet : astronomical
E. blueprint : mechanical
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
How did Mary feel about receiving the chickens？
Annoyed.
B. Surprised.
C. Happy
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