_______cloning human embryos is not legal in many countries, some scientists are already pushing ahead with research in order to produce a cloned human baby.
#31691
A
While
B
When
C
Since
D
if only
推荐题目
Our teacher looked here and there on the playground ________looking for something.
#31118
A
even though
B
as if
C
even if
D
only if
______could be judged from her eyes that she was terribly sorry for what he _____.
#32066
A
As; had done
B
That; did
C
As; did
D
It; had done
There is hard evidence ________ George has something to do with the murder.
#30750
A
which
B
what
C
why
D
that