What does the man want the woman to do?
A:Leave a message.
B:Ask Mr Wu to come at once.
C:Give him Mr Wu's mobile phone number.
【A层次题】如图所示,与实物图一致的电路图是( )
下面关于汽油机与柴油机的说法中,不正确的是( )
空气进入肺的正确顺序是( )
①鼻腔 ②支气管 ③喉 ④咽 ⑤气管 ⑥肺