用于饮水消毒的方法有()
A.氯气
B.漂白粉
C.生石灰
D.高锰酸钾
E.煮沸
参考答案:A, B, E
I’m concerned, the computer you want is not very expensive and you can afford it.
A.As far as
B.As long as
C.As much as
D.As well as
从纬度位置看,日本大部分位于
A.北温带、中纬度
B.热带、低纬度
C.北寒带、高纬度
D.南温带、中纬度