. It is clear that the whole world is passing through a social revolution in which a central _____ must be taken by scientists and technologists.
#6738
A
process
B
attention
C
measure
D
part
推荐题目
Helen borrowed my book _______, saying that she would return it soon.
#5976
A
day in and day out
B
day by day
C
some other day
D
the other day
___ is an engineer.
#7345
A
Li Pin’s and Li Hua’s father
B
Li Pin and Li Hua’s father
C
Li Pin’s and Li Hua father
D
Li pin and Li Hua father
In our class, when the bell rang and the teacher closed his book, it was a for everyone to stand up.
#5564
A
signal
B
chance
C
mark
D
measure
-- You are always full of _______. Can you tell me the secret?-- Taking plenty of exercise every day.
#6308
A
power
B
strength
C
force
D
energy