We gather from the passage that his main purpose in travelling was to ______.
A. test his endurance
B. prove his self-sufficiency
C. experience adventure
D. respond to new experiences
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The writer regards his friends' farewell to him as ______.
A. inappropriate
B. unsympathetic
C. tactless
D. cynical
What does the author mean by, saying "... in legal systems, the responsibility for revenge becomes depersonalized and diffused" in the second paragraph
A. Legal systems greatly reduce the possibilities of physical violence.
B. Offenses against individuals are no longer judged on a personal basis.
C. Victims of violence find it more difficult to take revenge.
D. Punishment is not carried out directly by the individuals involved.
Evidence of past climatic changes indicates that ______.
A. human activities have accelerated charges of the Earth's environment
B. the Earth's environment will remain mild despite human interference
C. the Earth's climate is bound to change significantly in the future
D. the Earth's climate is unlikely to undergo substantial changes in the future
Farming emerged as a survival strategy because man had been obliged ______.
A. to give up his former way of life
B. to leave the coastal areas
C. to follow the ever-shifting vegetation
D. to abandon his original settlement
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