A. To compare experience with the hostess on that bus. B. To get some orders. C. To find if there were some vacant seats. D. To fetch some more egg-salad sandwiches.
A. 气体交换受损 B. 有感染的危险 C. PC：窒息 D. 清理呼吸道无效 E. 体液过多
微信支付 
支付宝支付