脊髓侧索急性损伤可导致受损平面以下()
A.同侧肌肉瘫痪
B.对侧肌肉瘫痪
C.同侧腱反射永远消失
D.对侧腱反射永远消失
E.同侧痛温觉丧失
参考答案:A
The exam was very difficult but everyone ______ pass.
A.had to
B.would
C.could
D.was able to
计算圆面积,错误表示方法为()。(r表示半径,D表示直径)
A.S=πr~2
B.S=πD~2/4
C.S=πr~2/4