单项选择题
It is strange that he ______ absent today. A．be B．would be C．was D．were
单项选择题 消毒酒精的浓度φB为( ) A．0.75 B．0.95 C．1.00 D．0.35～0.50
单项选择题 These typewritten papers are very neat. I wish I ______ type too, but I dont know how. A．can B．may C．could D．will
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
