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- 共用题干 Learn about Light1 .Ancient civilizations were amazed by the existence of light for thousands ...
- The study also notes a steady decline in the number of college students taking science courses.
- 共用题干 A Doctor in the HouseBrushing your teeth twice a day should keep the dentist away. But if a gr...
- 共用题干 Where Has the Salt Come from?Every now and then,we meet a fact about our earth that makes us f...
- 共用题干 Teaching Math,Teaching AnxietyIn a new study about the way kids learn math in elementary schoo...
- 共用题干 “Lucky” Lord Lucan一Alive or DeadOn 8th November 1974 Lord Lucan,a British aristocrat,vanished....
- 共用题干 Pop Music in AfricaYoung musicians in African countries are creating a new kind of pop music. ...
- 共用题干 第一篇Renewable Energy SourcesToday petroleum（石油）provides around 40% of the worlds energy needs, ...
- 共用题干 Germs（细菌）on BanknotesPeople in different countries use different types of money:yuan in China,...
- 共用题干 Unpopular Subjects?Is there a place in todays society for the study of useless subjects in our...