问题
选择题
In my opinion, this is not an economical way to get more water; ____, it is very expensive.
A．on the other hand
B．on the contrary
C．in short
D．or else
答案
答案：B
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In my opinion, this is not an economical way to get more water; ____, it is very expensive.
A．on the other hand
B．on the contrary
C．in short
D．or else
答案：B