Passage 1
11. B) it destroys rainforest soils
12. C) organic matter is quickly lost due to heat and rain
13. A) studying patches of fertile soils in the central Amazon
14. D) They can revover easily after slash-and-burn farming.
15. D) there once existed an urban civilization in the Amazon rainforests
Passage 2
16. A) they are driven by an overwhelming sense of individualism
17. B) It is getting closer to American-style capitalism.
18. D) healthy and wealthy
19. A) some modern women prefer a life of individual freedom
20. C) To examine the trend of young people living alone.
Passage 3
21. C) over the possible adverse effect of GM bacterium on plants
22. B) the result of an experiment she conducted herself
23. D) hasn't given permission to field test the GM organism
24. C) shouldn't demand that Ingham be disciplined for voicing her views
25. A) Her testimony hasn’t been supported by the EPA
Passage 4
26. D) Poor adjustment of her body clock to seasonal changes
27. B) realized what her problem was
28. C) It proves to be an effective therapy
29. D) Light therapy could be misused by certain mental patients
30. A) Winter depressives prefer light therapy in spite of its convenience