A brilliant idea occurred to him, ___ to his research in the lab.
#67725
A
while devoting
B
while devoting himself
C
while he was devoted
D
while devoted
推荐题目
Clean water and fresh air are essential for our daily life, _______ we can’t live.
#66990
A
by which
B
without which
C
that
D
on which
The view ______ many scientists hold is ______ too much emission of carbon dioxide is destructive.
#67905
A
what; that
B
that; which
C
that; that
D
which; which
_______has recently been done to provide more buses for the people ,a shortage of public vehicles remains a serious problem .
#73038
A
That
B
What
C
In spite of what
D
Though what
The great scientist became world-known in the early 1970s,______ he and another scientist made new discoveries about black holes.
#73597
A
which
B
where
C
when
D
then