分析实验室用水不控制什么指标？（）
A.pH范围
B.细菌
C.电导率
D.吸光度
E.有机物
参考答案：B
I know you like ______________.[ ]
A. collect stamps
B. collected stamps
C. collecting stamps
This is my new dress. Let me ______.[ ]
A. to show you it
B. show it to you
C. show it you
D. to show it to you
