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- 共用题干 第三篇The Science of the FutureUntil recently,thescience of the futurewas supposed to be electron...
- 共用题干 Forests for CitiesYou are standing in a beautiful forest in Japan. The air is clean and smells...
- 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 Ecosystem1. The word “ecosystem” is short for ecological（生态的）system. An ecosystem is where liv...
- 共用题干 Germs（细菌）on BanknotesPeople in different countries use different types of money:yuan in China,...
- 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 Narrow EscapeWe had left the hut too late that morning. When we stepped outside,the sky beyond...
- 共用题干 The Greatest Mystery Of WhalesThe whale is a warm-blooded,air-breathing animal,giving birth to...
- 共用题干 Motion SicknessLiving in space looks like lots of fun.You can do certain things in space(like ...