题型:判断题 I cleaned my classroom ___________.[ ]A. with three hours B. three hours ago C. in three hours D. three hours before 查看答案
题型:判断题 男性,55岁。3年来经常反复咯血和咳黏稠痰,低热,较前消瘦,活动后感气短,乏力,胸片左上肺有片状及条索状阴影,其中并有透光区,胸廓下陷,气管左移 下列检查意义最大的是A.X线钡餐透视B.纤维结肠镜C.腹部B超D.腹部CT 查看答案