【四六级考试网 - 大学英语四六级考试(CET)试题】：
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) positive B) neutral C) suspicious D) critical

 

　　29. With a view to correcting the mistakes of our forefathers, the author suggests that

　　A) we plant more trees

　　B) we be taught environmental science, as well as the science of plants

　　C) environmental education be directed toward everyone

　　D) we return to nature

　　30. What does the author imply by saying "living space ——' is figured -" also in cubic volume

　　above the earth" (Lines 8 - 9, Para. 3) ?

　　A) Our living space on the earth is getting smaller and smaller.

　　B) Our living space should be measured in cubic volume.

　　C) We need to take some measures to protect space.

　　D) We must create better living conditions for both birds and animals