This is a______ but extremely difficult technology in the future.
#20858
A
satisfactory
B
costly
C
promising
D
far-fetched
推荐题目
Eventually he gave in to the wish of the ________.
#19836
A
most
B
majority
C
average
D
common
Japan is an ______ industrial country.
#19917
A
advancing
B
advanced
C
to advance
D
to be advanced