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- 共用题干 Motion SicknessLiving in space looks like lots of fun.You can do certain things in space(like ...
- 共用题干 Sharks Perform a Service for Earths WatersIt is hard to get people to think of sharks as anyth...
- The curious looks from the strangers around her made her feel uneay.
- 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 Robots May Allow Surgery in SpaceSmall robots designed by University of Nebraska researchers m...
- 共用题干 第一篇Technology Transfer in GermanyWhen it comes to translating basic research into industrial s...
- 共用题干 Chimpanzees1 Chimpanzees（黑猩猩）will soon be extinct（灭绝）.If the present rate of hunting and habit...
- The view from my bedroom window was absolutely spectacular.