Passage 2Questions 6 to 10 are based on the following passage:　　Half of the world’s coral reefs(珊瑚礁) have died in the last 30 years. Now scientists are racing to ensure that the rest survive. Even if global warning were to right now, scientists predict th - 小书虫-学习资料库-最全资料库

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although billion bleach change global history industrial medical permanent process racing research sensitive surface world 大学英语模拟水藻灭绝珊瑚礁章节考试试题

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