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- 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 Travel Across AfricaFor six hours we shot through the barren（荒芜的）landscape of the Karoo desert...
- 共用题干 第一篇Is the Tie a Necessity?Ties,or neckties,have been a symbol of politeness and elegance in Br...
- 共用题干 Canadian Parents Win Legal Battle against HomeworkUsually it is the children,not the parents,w...
- 共用题干 Global WarmingFew people now question the reality of global warming and its effects on the wor...
- 共用题干 Sharks Perform a Service for Earths WatersIt is hard to get people to think of sharks as anyth...
- 共用题干 The Difference between Man and ComputerWhat makes people different from computer programs?What...
- 共用题干 第二篇A Very Slow RideThe surface of the earth may seem very stable to you.But you might be amaz...
- 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...
- A great deal has been done to remedy the situation.