评析“中国气候威胁论”并指出中国应对气候变化问题的战略选择。
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What makes going to space the most expensive vacation is the enormous cost involved in ______.
______ had dominated society for 10,000 years but declined rapidly in the 20th century.
上述案例说明，美国总统和他提名的官员要受到哪些监督？
Give examples to show "an ever more competitive childhood".
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