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- 共用题干 Animals “Sixth Sense”A tsunami（海啸）was triggered（引发）by an earthquake in the Indian Ocean in Dec...
- 共用题干 U. S. Scientists Confirm Water on MarsNASA scientists said that Mars was covered once by vast ...
- 共用题干 Giant StructuresIt is an impossible task to select the most amazing wonders of the modern worl...
- 共用题干 第一篇Motoring Technology1.2 million road deaths worldwide occur each year,plus a further 50 mill...
- 共用题干 EarthquakeHow does an earthquake start?What makes an earthquake happen? The rock of the earths...
- 共用题干 Migrant（移民的）WorkersIn the past twenty years,there has been an increasing tendency for workers ...
- 共用题干 Global WarmingFew people now question the reality of global warming and its effects on the wor...
- 共用题干 Save Energy At HomeOn the average,Americans waste as much energy as two-thirds of the worlds p...
- 共用题干 A Doctor in the HouseBrushing your teeth twice a day should keep the dentist away. But if a gr...
- 共用题干 Travel Across AfricaFor six hours we shot through the barren（荒芜的）landscape of the Karoo desert...