人体内CO2及O2等气体分子进出细胞膜是通过()
A.易化扩散
B.单纯扩散
C.被动转运
D.主动转运
E.蛋白质通道扩散
参考答案:B
I would appreciate it________you call back this afternoon for the doctor’s appointment.[ ]
A.until
B.if
C.when
D.that
在询问发热患者发热的时间时,问:“你发热是在午后吗?”这不属于暗示性提问。()