对加入机组人员应查验其（）。
A.中国民航公务乘机通行证
B.空勤登机证
C.加入机组证明信
D.工作证件
参考答案：A, C, D
Anyway, that evening, ______ I’ll tell you more about later, I ended up staying at Rachel’s place.
A．when
B．where
C．what
D．which
Can you tell the ________ difference between the words "require" and "request"? I sometimes get
puzzled by their meanings. [ ]
A. dramatic
B. regional
C. apparent
D. subtle
