单项选择题

Air and water pollution are our Number One priorities regarding the current and future state of the environment．

A) 有关环境的现状和未来，空气和水污染是我们关注的首要问题。
B) 未来和现在的水污染和空气污染状况是我们关注的首要问题。
C) 由于空气和水污染，未来和现在的环境成了我们关注的首要问题。
D) 空气污染和水污染是未来和现在环境的头号杀手。
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单项选择题
When you find your neighbor has swallowed poison, you should______.
A．try to make him sick
B．give him some other medicine to eat at once
C．take him to a hospital at once
D．try to find out what he had eaten
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