常用的消毒剂有（）
A.高锰酸钾
B.甲酸
C.硫酸
D.盐酸
E.甲醇
参考答案：A
— It's so cold today.
— Yes, it's colder than it was yesterday.
A．some
B． more
C． very
D． much
从城市发展看，影响M城的主要区位因素是 ( )
