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- 共用题干 Narrow EscapeWe had left the hut too late that morning. When we stepped outside,the sky beyond...
- 共用题干 Germs（细菌）on BanknotesPeople in different countries use different types of money:yuan in China,...
- 共用题干 Dark Forces Dominate UniverseThe earth,moon,sun and all visible stars in the sky make up less ...
- At that time,we did not fully grasp the significance of what had happened.
- 共用题干 Cloning（克隆）:Future Perlect?1 A clone is an exact copy of a plant or animal produced from any o...
- 共用题干 Canadian Parents Win Legal Battle against HomeworkUsually it is the children,not the parents,w...
- 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 Chimpanzees1 Chimpanzees（黑猩猩）will soon be extinct（灭绝）.If the present rate of hunting and habit...
- 共用题干 “Liquefaction” Key to Much of Japanese Earthquake DamageThe massive subduction zone earthquake...