大学英语六级阅读历年真题训练unit4(A)

the protection of plant life and why the running current of streams and rivers must be made to yield their full benefit to the soil before they finally escape to the sea. We need to betaught the duty of planting trees as well as of cutting them. We need to know the importance of big, mature trees, because living space for most of man's fellow creatures on this planet is figured not only in square measure of surface but also in cubic volume above the earth. In brief, it should be our goal to restore as much of the original beauty of nature as we can.
 
26. The author's attitude towards the current situation in the exploitation of natural resources is_______ .
A) critical                                         
B) neutral                                        
C) positive
D) suspicious

27. According to the author, the greatest mistake of our forefathers was that _______ .
A) they had no idea about scientific forestry
B) they were not aware of the significance of nature study
C) they had little or no sense of environmental protection
D) they had no idea of how to make good use of raw materials
 
28. It can be inferred from the third paragraph that earlier generations didn't realize _______ .
A) the importance of the proper use of land
B) the value of the beauty of nature
C) the harmfulness of soil destruction and river floods
D) the interdependence  of water, soil, and living things
 
29. To avoid the mistakes of our forefathers, the author suggests that_______ .
A) we plant more trees
B) we return to nature
C) natural sciences be taught to everybody
D) environmental education be directed toward everyone
 
30. What does the author imply by saying “living space...is figured...also in cubic volume above the earth” (Para. 3, Lines 8-10)?
A) We need to take some measures to protect space.
B) Our living space should be measured in cubic volume.
C) Our living space on the earth is getting smaller and smaller.
D) We must preserve good living conditions for both birds and animals.

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