计数椎骨的标志有（）
A.隆椎棘突（颈7）
B.髂嵴最高点平3—4腰椎棘突间
C.髂前上棘
D.髂前下棘
E.坐骨棘
参考答案：A, B
浸泡金属器械应用（）
A.甲醛
B.2%戊二醛
C.0.5%碘伏
D.0.1%苯扎溴铵
E.75%乙醇
In the current situation, ___________ the dollar goes above 1.85 reais, investors sell the greenback to take some profit.
A．whenever
B．however
C．whatever
D．whichever
