自2015年初开始,欧洲遭受了二战以来规模最大的难民危机。导致难民数量增长的根本原因在于()
A.hasthebiggesthealthproblemofthecarindustry
B.hasmadeprofitsfromitshealth-carelegacy
C.hasaccumulatedtooheavyahealth-careburden
D.owesagreatdealofdebttoitsemployees
显微摄影是一门使用照相拍摄显微镜下一般用肉眼无法看清的标本的技术。肉眼中千篇一律的细沙,在显微镜下,却是"一沙一世界",有的晶莹剔透像宝石,有的金黄酥脆像饼干,即使是司空见惯的柴米油盐,在显微镜下也会展现神奇而充满魅力的另一面。显微镜下的"一沙一世界"表明()
A.merica’shealthsystemhasitsstrengthsandweaknesses
B.theUSgovernmentpaysmedicalbillsforthepoorandtheelderly
C.some46millionmericansdonothavemedicalinsurance
D.uropeansbenefitalotfrommerica’smedicalresearch
A.apracticeofanadaandurope
B.apolicyadoptedbytheUSgovernment
C.intendedfortheretiringbaby-boomers
D.administeredbyprivateenterprises