在废水分析中，大肠埃希氏菌作为（）。
A、水中粪便污染的指示
B、进行平板计数的常规生物
C、水中固氮菌数量指示
D、水中氨基酸含量的尺度
参考答案：A
患者神识不清，语言重复，时断时续，声音低弱者，是（）
A.谵语
B.郑声
C.独语
D.错语
E.狂言
I was surprised to know that ______ two top students were caught stealing in the supermarket.
Worse still, ________ third one was found fighting with others. [ ]
A. the; a
B. the; the
C. /; a
D. /; the
