长期高浓度持续给氧可能导致 （ ）
A．氧抽搐
B．抑制呼吸
C．视力下降
D．肺氧中毒
E．二氧化碳潴留
参考答案：B,D,E
–Do you know ?
–Yes. At about twelve. I was just about to go to bed.
A. when he came back
B. when he will come back
C. whether he goes to bed late
潮 土
