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- 共用题干 Old Man Myths and Realities1 When does a middle-aged man become an old man?Officially,of cours...
- 共用题干 The RoadrunnerThe roadrunner（走雀）lives in the desert zone of the southwestern United States and...
- Do we have to wear these name tags?
- 共用题干 Health Insurance（保险）Most Americans are responsible for their own medical costs.These can be ex...
- 共用题干 第三篇A New Cause of SufferingA conference on obesity（肥胖症）was recently held in Vienna. Two thousa...
- 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 A Health ProfileA Health profile is a portrait of all of the factors that influence your healt...
- 共用题干 Scientists Develop Ways of Detecting Heart AttackGerman researchers have___1___a new generatio...
- 共用题干 Cancer Drug Trials Often Halted EarlyAn increasing number of clinical trials for new cancer tr...