当双侧瞳孔散大、固定、对光反射消失，如果同时伴有心跳、呼吸停止，则表明病人已死亡。
参考答案：对
— We plan to go out for a picnic next weekend. Would you like to come along?
— ______. It’s my favourite.
A．Enjoy yourself
B．It doesn’t matter
C．You’re welcome
D．That would be very nice
诊断下呼吸道感染时，经支气管肺泡灌洗分离到病原菌数需（）
A.≥103cfu/ml
B.≥104cfu/ml
C.≥105cfu/ml
D.≥106cfu/ml
E.≥107cfu/ml
