当1＜a＜2时，代数式︱a-2︱+︱1-a︱的值是[ ]
A.-1
B.1
C.3
D.-3
答案：B
白虎汤的功用（）
A．利湿退黄
B．活血散瘀
C．清热泻火
D．泻下通腑
E．凉血止血
We wish to receive your sample ______ which we will pay upon receipt of your advice.
A．of
B．with
C．about
D．for
