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- 问题详情：Childrenwhoareraisedinhouseholdswithdogsduringtheirfirstyearoflifemayhavealowerriskofasthma(哮喘)afewyearslater,anewstudysuggests.Inthestudy,theresearcherslookedatearlyexposuretodogsandfarmanimalsandtherateofasthmaamongabout276,000school-agec...
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