题型:选择题 In communication, a smile is usually ________ strong sign of a friendly and ________ open attitude.[ ]A. the; /B. a; anC. a; /D. the; an 查看答案
题型:单项选择题 男,32岁,7月26日就诊。腹泻1天,大便无数次,伴呕吐多次,均为稀水,不发热。体格检查:P124次/分,BP50/30mmHg,精神萎靡,腹软,肠鸣音活跃。为尽快诊断,本病最需进行的检测是()A.大便常规B.大便悬滴及制动试验C.大便培养D.血清特异性抗体检测E.大便特异性抗原检测 查看答案