This is not an economical way to get more water; _________,it is very expensive.
#26904
A
on the contrary
B
on the other hand
C
in a word
D
rather than
推荐题目
They are_______the same size.You can take_______half of the bread.
#28080
A
of;either
B
with;either
C
in;both
D
at;none
Children are taught to respect everyone, ______ race, sex or age. 
#26999
A
in terms of
B
in the face of  
C
regardless of
D
in place of