引起呕吐的原因有
A．饮食不节
B．外邪侵袭
C．情志失调
D．脾胃虚弱
参考答案：A,B,C,D
若一组数据6，7，5，6，x，1 的平均数是5，则这组数据的众数是 .
(江苏省南通市2009期末调研)I don’t think that your lecture _______ the audience, for they appeared quite puzzled.
A．got across to
B．got close to
C．got away with
D．got along with
