抗凝血酶Ⅲ不能灭活的因子是（）
A.因子Ⅺa
B.因子Ⅻa
C.因子Ⅸa
D.因子Ⅶa
E.因子Xa
参考答案：D
处方为+0.75-2.25×160的镜片为（）。
A、单纯性近视散光镜片
B、复性近视散光镜片
C、混合性散光镜片
D、复性远视散光镜片
--- Is Peter there?
--- _____________, please. I’ll see if I can find him for you.
A．Hold up
B．Hold on
C．Hold out
D．Hold off
