易侵犯人体上部和肌腠的外邪是：
A．风邪
B．寒邪
C．湿邪
D．燥邪
参考答案：A
— May I put my pen on the desk?
— _____________[ ]
A. Yes, put it.
B. Yes, put them here.
C. Yes, please.
晨昏线
