关于脊髓亚急性联合变性的临床表现错误的是（）
A.贫血
B.手套、袜套样感觉减退
C.Lhermitte征阳性
D.小脑性共济失调
参考答案：D
—Why didn’t you come for the meeting?
—Only allowed by our manager .
A．I could come
B．If I could come
C．when I could come
D．could I come
乘法机的发明者是______。
A．祖冲之
B．莱布尼兹
C．张衡
D．冯·诺依曼
