计算9.2 ×10.1的简便算式是[ ]
A．9.2×10+9.2×0.1
B．9.2×10+9.2
C．9.2×1+9.2×0.1
答案：A
休克指数的计算方法是（）。
A.收缩压和舒张压之比
B.心率与收缩压之比
C.脉率与舒张压之比
D.脉率与脉压之比
E.脉率与收缩压之比
He spent all his money _____ this big house. [ ]
A. in
B. on
C. to
D. at
