家畜日射病的病因是( )。
A．散热障碍
B．高热应激
C．热平衡失调
D．环境通风不良
E．日光持续照射头部
参考答案：E
— Where has Tom gone?
— He was seen _____ football on the playground a few minutes ago. [ ]
A. playing
B. play
C. to be played
D. played
以下服务中用户获得的服务内 * * 本相同的为（）。
A.Wap over GSM和Wap over GPRS
B.CMNet和CMWap
C.CMWap和拨号163上网
D.CMNet和拨号163上网
