苯巴比妥的乙醇溶液澄清度检查物质是（）.
A．苯丙二酰脲
B．酸性杂质
C．2-苯基丁酰胺
D．对氨基酚
E．苯基丁酰脲
参考答案：A
—Would you like me to carry this box for you?
—_________.I can manage it myself.
A．No, thanks
B．It’s a pleasure
C．That would be nice
D．Yes, please
禁食期间机体首先动用的能源是 ( )
A．糖原B．骨骼蛋白质C．血浆蛋白质D．脂肪E．肝内蛋白质
