引起呃逆的原因应排除下列那项:
A.热犯胃腑
B.胃气衰败
C.寒邪客胃
D.燥邪犯肺
参考答案:D
A study ______ that women find it more difficult to give up smoking than men.
A.directs
B.indicates
C.influences
D.guides
五笔型输入法是
A.音码
B.形码
C.混合码
D.音形码