对癫痫局限性发作无效的药物是
A．丙戊酸
B．苯妥英钠
C．乙琥胺
D．苯巴比妥
E．扑痫酮
参考答案：C
解析：乙琥胺只对癫痫小发作有效。
-------- Is this bike_________? ---------No, it’s __________.
A．your, him
B．yours, his
C．you, him
D．your ,his
For each person it is certified to carry，a lifeboat on an oceangoing passenger vessel must be provided with all of the following EXCEPT（）.
A.3 litres of water
B.1 unit of provisions
C.1 seasickness kit
D.1 life preserver
