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户外探险活动不是拿生命去冒险，相反，要尽一切可能降低或避免危险发生的可能性。在面对困难与险情时，除了生存知识与技能有助于避险外，还要树立战胜困难的决心和信心，保持永不放弃生存的努力。()

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凡是能满足人的需要或符合人的愿望、观点的客观事物，就使人产生愉快、喜爱等肯定的情感体验。()

According to the last paragraph, the oil "supermajors" believe that

A. the emerging world needs more vehicles.
B. the future of oil is bright in the emerging world.
C. the demand for oil is the strongest in Asia.
D. the thirst for fuel is impossible to be reduced.

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Which of the following statements is true, according to paragraph 3 and 4？

A. Demand for oil is close to a peak with supplies increased.
B. The oil demand in the world has already peaked until 2005.
C. New energy has broken the dominance of conventional gas.
Demand for oil is limited while supply of oil is unlimited.

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Regarding the immigration into America, the authors attitude is

A. doubtful.
B. indifferent.
C. pessimistic.
D. supportive.

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