一个圆的直径是10cm，另一个圆的面积比这个圆的面积少16πcm2，则另一个圆的半径长为（ ）cm。
3
—Jack gave me a note while I ______ in class.
—Well, he used to talk to me when I was next to him. [ ]
A. am reading
B. was reading
C. reads
D. will read
能最有效地消除术中知晓和产生良好的顺行性遗忘的麻醉药物是
A．硫喷妥钠
B．丙泊酚
C．咪哒唑仑
D．氯胺酮
E．依托咪酯
