.
The situation demanded that he ___________ present.
A was B is C be D were
答案:C
患者,女,12岁,有反复鼻塞、打喷嚏、流清涕数年,鼻镜检查见双鼻腔黏膜及下鼻甲水肿,对类固醇激素喷鼻有效。最有可能的诊断是()
A.慢性单纯性鼻炎
B.慢性肥厚性鼻炎
C.变应性鼻炎
D.血管运动性鼻炎
E.嗜酸性细胞增多性鼻炎
某船发现前方有一两锥形顶标锥顶相对的航标,该航标是()标。
A.左侧
B.西方位
C.新危险物
D.东方位