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- 共用题干 Ants Have Big Impact on Environment as“Ecosystem Engineers”Research by the University of Exete...
- 共用题干 Solar StormAt the end of October 2003,a sudden solar storm hit the earth.A solar storm refers...
- 共用题干 Eastern Quakes Can Trigger Big ShakesIn the first week of November 2011,people in central Okla...
- The once barren hillsides are now good farmland.
- 共用题干 GarlicFrom early times man has used garlic（大蒜）.The Bible speaks of it. The Israelites （古以色列人）w...
- 共用题干 Why would They Falsely Confess?Why on earth would an innocent person falsely confess to commit...
- 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 Sharks Perform a Service for Earths WatersIt is hard to get people to think of sharks as anyth...
- Canada will prohibit smoking in all offices later this year.