This is a______ but extremely difficult technology in the future.
#20858
A
satisfactory
B
costly
C
promising
D
far-fetched
推荐题目
There is a ______ table in the middle of the room.
#19025
A
round brown old wooden
B
round old brown wooden
C
old round wooden brown
D
old brown round wooden
My car’s performance is ___ since the engine’s been tuned and the tires have been changed.
#19285
A
better as twice
B
twice as the condition
C
twice as good
D
twice as better
 The audience were ________ by his ________ performance on the stage.
#18408
A
amazed; amazed
B
amazed; amazing
C
amazing; amazed
D
amazing; amazing