下述哪个药物治疗癫痫限局性发作是无效的?
A.丙戊酸
B.苯妥英
C.乙琥胺
D.卡马西平
E.扑米酮
参考答案:C
A serious study of physics is impossible________some knowledge of mathematics.
(2013·大纲全国,31)
A.against
B.before
C.beyond
D.without
怎样减少回弹量?