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- 共用题干 Influenza（流感）Influenza has been with us a long time. According to some Greek writers___1___ me...
- 共用题干 ExerciseWhether or not exercise adds___1___the length of life,it is common experience that a c...
- 共用题干 Chimpanzees1 Chimpanzees（黑猩猩）will soon be extinct（灭绝）.If the present rate of hunting and habit...
- We had trouble finding a pure water supply.
- 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...
- The story was published with the sole purpose of selling newspapers.
- 共用题干 What Is Cancer?Cancer is actually a group of many related diseases that all have to do with ce...
- 共用题干 第二篇Sleep Necessary for MemoriesBurning the midnight oil before an exam or interview does harm ...
- 共用题干 Promising Resnlts from Cancer StudyA new experimental vaccine（疫苗）has shown promising results i...
- 共用题干 Eat for a Good and Healthful LifeFood is essential to us as it_________(1)us alive.But recentl...