机体防卫反应过高可导致( )
A．自身免疫病B．超敏反应C．肿瘤D．病毒持续性感染E．免疫缺陷
参考答案：B
14. Many new games are designed on the computers all the time; people of all ages ______ these games.
A．are playing
B．had played
C．have been playing
D．Play
在出乎意料的情况下所引起的情绪状态叫做（）。
A、心境
B、应激
C、激情
D、意义
