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- 共用题干 Ecosystem1. The word “ecosystem” is short for ecological（生态的）system. An ecosystem is where liv...
- New born babies can discriminate between a mans and a womans voice.
- 共用题干 Global WarmingFew people now question the reality of global warming and its effects on the wor...
- Smoking will be banned in all public places here.
- 共用题干 Every Dog Has His SayKimiko Fukuda always wondered what her dog was trying to say. Whenever sh...
- 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 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 ...
- Everybody was glad to see Mary back.
- I rarely wear a raincoat because I spend most of my time in a car.