带下过多的西医病机为（）
A.一般炎症
B.雌激素水平低落
C.孕激素水平低落
D.血液循环障碍
E.恶性肿瘤
参考答案：B
He expressed his hope ____ he would visit Chinaagain thenext year, and this was
The very hope____he expressed as soon as he arrived in the country.
A．that;that
B．which;which
C．that;which
D．which;that
灭火器上的压力表用红、黄、绿三色表示灭火器的压力情况，当指针指在绿色区域表示（）。
A.正常
B.偏高
C.偏低
