This is a topic that calls for not only free expression of feelings, but also the guidance of reason. What position wilderness should enjoy in the preservation of the world obviously deserves much more serious thinking.

　　67. John Sauven holds that_____.

　　A. many people value nature too much

　　B. exploitation of wildernesses is harmful

　　C. wildernesses provide humans with necessities

　　D. the urge to develop the ecosystem services is strong

　　68. What is the main idea of Para. 3?

　　A. The exploitation is necessary for the poor people.

　　B. Wildernesses cannot guarantee better use of raw materials.

　　C. Useful services of wildernesses are not the reason for no exploitation.

　　D. All the characteristics concerning the exploitation should be treated equally.

　　69. What is the author’s attitude towards this debate?

　　A. Objective.

　　B. Disapproving.

　　C. Sceptical.

　　D. Optimistic.

　　70. Which of the following shows the structure of the passage?

　　A.

　　B.

　　C.

　　D.

　　CP: Central Point

　　P: Point

　　Sp: Sub-point(次要点)

　　C: Conclusion

　　67.B

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