河南成教 / 大学英语4
正确率：100%
6[单选题]
This is not an economical way to get more water; _ _ _ _ _ _ , it is very expensive.
A.or else
B.in short
C.on the contrary
D.on the other hand
This is not an economical way to get more water; _ _ _ _ _ _ , it is very expensive.
参考答案：
佳题速递：