在急救现场主要是根据伤者的呼吸的变化、（）和瞳孔的变化来判断病情的轻重，从而采取正确而有效的急救。
参考答案：脉博的变化
I think no one will give you any help. They think you _____ swim in your age.[ ]
A. are worth
B. are used to
C. make you
D. are supposed to
He likes to play a trick ________ me on the weekend and always begs me to ________ him for his
actions.[ ]
A. on; depend
B. at; forgive
C. on; forgive
D. with; excuse
