解除喉痉挛首选（）
A.解除诱发因素
B.吸氧
C.加深麻醉
D.静注肌肉松弛药
E.静注
参考答案：A
He arrived here at noon, in the day, and he went out and came back in the day.
A．late; late
B．late; later
C．later; late
D．later; later
温室气体的减排成本主要包括（）
