车辆在交叉路口有优先通行权的,遇有车辆抢行时,应怎样做?
A.抢行通过
B.提前加速通过
C.按优先权规定正常行驶不予避让
D.减速避让,必要时停车让行
参考答案:D
Tom hurried to the lecture hall, only _____ the president's speech had been canceled. [ ]
A. to tell
B. to be told
C. telling
D. being told
沙丁胺醇
A.选择性激动α2受体
B.选择性阻断α2受体
C.选择性激动β2受体
D.选择性阻断β2受体
E.选择性阻断β1受体