虚寒呃逆的表现可见()
A.呃声高亢而短
B.气弱无力
C.呃声低沉而长
D.呃逆有酸腐味
E.高亢有力
参考答案:B, C
--How many times has Chang’eⅠ ________ the Moon?
--Only once.It went there last year.
A.go to B.gone to C.been to
能有效缓冲血压快速波动的心血管反射是