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- 共用题干 The Northern LightsThe Sun is stormy and has its own kind of weather It is so hot and active t...
- 共用题干 Water一the Issue of This CenturyThe world is running short of freshwater. Populations are growi...
- 共用题干 Migrant（移民的）WorkersIn the past twenty years,there has been an increasing tendency for workers ...
- She was sent a box of chocolates along with a letter saying she was fired.
- 共用题干 The FamilyThe structure of a family takes different forms around the world and even in the sam...
- 共用题干 Free Statins with Fast Food could Neutralize Heart RiskFast food outlets could provide statin ...
- 共用题干 “Lucky” Lord Lucan一Alive or DeadOn 8th November 1974 Lord Lucan,a British aristocrat,vanished....
- 共用题干 第一篇How Animals Keep WarmMan has invented ways to keep warm,but how do animals defend themselve...
- 共用题干 The Smog（烟雾）For over a month,lndonesia was in crisis.Forest fires raged out of control as the ...
- 共用题干 Learn about Light1 .Ancient civilizations were amazed by the existence of light for thousands ...