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- 共用题干 第一篇Renewable Energy SourcesToday petroleum（石油）provides around 40% of the worlds energy needs, ...
- At 80,Peck was still vigorous and living in Paris.
- The photographs evoked strong memories of our holiday in France.
- Traffic reaches its rush hour between 8:00 and 9:00 in the morning.
- 共用题干 Germs（细菌）on BanknotesPeople in different countries use different types of money:yuan in China,...
- 共用题干 The Forbidden AppleNew York used to be the city that never sleeps. These days its the city tha...
- 共用题干 Global WarmingFew people now question the reality of global warming and its effects on the wor...
- 共用题干 U. S. Scientists Confirm Water on MarsNASA scientists said that Mars was covered once by vast ...
- 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 Black HolesMost scientists agree that black holes exist but are nearly impossible to locate.A ...