脊髓腔穿刺后，为使其不引起头痛应采取
A．半坐卧位
B．俯卧位
C．头高足低位
D．仰卧位
E．侧卧位
参考答案：D
—I don't know ______ now.
—Her mother says she is much better. [ ]
A. what is she
B. where is she
C. who she is
D. how she is
牵引梁扩张单侧超过（）mm或两侧之和超过（）mm时调修。
A.20；30
B.25；30
C.20；35
D.25；35
