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- 共用题干 The Smog（烟雾）For over a month,lndonesia was in crisis.Forest fires raged out of control as the ...
- 共用题干 An Intelligent CarDriving needs sharp eyes, keen ears, quick brain, and coordination（协调）betwee...
- 共用题干 Ecosystem1. The word “ecosystem” is short for ecological（生态的）system. An ecosystem is where liv...
- 共用题干 When Our Eyes Serve Our StomachOur senses arent just delivering a strict view of whats going o...
- 共用题干 Energy and Public LandsThe United States boasts substantial energy resources. Federal lands pr...
- 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 Chimpanzees1 Chimpanzees（黑猩猩）will soon be extinct（灭绝）.If the present rate of hunting and habit...
- 共用题干 Ecosystem1. The word “ecosystem” is short for ecological（生态的）system. An ecosystem is where liv...
- Michael is now merely a good friend,
- 共用题干 Learn about Light1 .Ancient civilizations were amazed by the existence of light for thousands ...