下列各项，对判断霍乱患者脱水程度最有意义的是（）
A.皮肤黏膜弹性
B.血压
C.血细胞比容
D.血钠
E.血浆比重
参考答案：E
用方框内所给词语的正确形式填空。
小题1:In spring, the _________ are very beautiful.
小题2:Would you like to take a _________ for me?
小题3:I’m very tired and I want to go to bed early ________.
小题4:The lost child is in ________ now.
小题5:I ________ with my best friend yesterday.
市盈率是股票市场上的常用估值方法，当股票的（）时，市盈率将上升。
A．股价与每股收益都上升
B．股价上升而每股收益下降
C．股价下降而每股收益上升
D．股价与每股收益都下降
