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- 共用题干 第二篇Hurricane（咫风）KatrinaA hurricane is a fiercely powertul , rotating（旋转的）form of tropical stor...
- 共用题干 U. S. Scientists Confirm Water on MarsNASA scientists said that Mars was covered once by vast ...
- 共用题干 第一篇Renewable Energy SourcesToday petroleum（石油）provides around 40% of the worlds energy needs, ...
- He could not tolerate the extremes of heat in the desert.
- 共用题干 Free Statins with Fast Food could Neutralize Heart RiskFast food outlets could provide statin ...
- 共用题干 Walk a Quarter-Mile or DiemIf you can walk a quarter-mile,odds（可能性）are you have at least six y...
- 共用题干 Eastern Quakes Can Trigger Big ShakesIn the first week of November 2011,people in central Okla...
- He kept in contact with his family while he was in Australia.
- 共用题干 Travel Across AfricaFor six hours we shot through the barren（荒芜的）landscape of the Karoo desert...
- 共用题干 Chimpanzees1 Chimpanzees（黑猩猩）will soon be extinct（灭绝）.If the present rate of hunting and habit...