旅游者向旅游投诉管理机关请求保护合法权益的投诉时效期间为______。
A．30天
B．60天
C．90天
D．120天
参考答案：B
—The radio is too noisy and there is nothing interesting on it. Why don't you ______?
—All right. I'll do that. [ ]
A. turn on it
B. turn it off
C. turn off it
D. turn it up
甲亢行甲状腺次全切术后8小时发生惊厥，最可能的原因（）
A.甲状腺切除过多
B.甲状旁腺被误切
C.碱中毒
D.甲状腺危象
E.血糖过高
