It is strange that he ______ absent today.
    A．be            B．would be          C．was               D．were

消毒酒精的浓度φB为( ) A．0.75 B．0.95 C．...

单项选择题消毒酒精的浓度φ_B为(  )
   A．0.75    B．0.95    C．1.00    D．0.35～0.50

These typewritten papers are very neat. I wish I ______...

单项选择题These typewritten papers are very neat. I wish I ______ type too, but I don't know how.
    A．can           B．may              C．could             D．will

防治脑水肿目前最常采用的脱水剂是( ) A．25%山梨醇 B．30%尿素 ...

单项选择题防治脑水肿目前最常采用的脱水剂是(    )
   A．25%山梨醇  B．30%尿素  C．20%甘露醇  D．50%葡萄糖  E．清白蛋