_______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
regular exercise is very important.It’s never a good idea to exercise too close to bedmme.
#32899
A
It
B
As
C
Although
D
Unless
_______ as many local people as possible when you are abroad and you find it easier to overcome the culture difference.
#31290
A
To know
B
Knowing
C
Known
D
Know
My cousin is really enthusiastic about playing basketball. ______ he shoots a ball, he likes to think of himself as a Kobe Bryant.
#30696
A
At one time
B
All the time
C
The first time
D
Every time
________difficulties we may come across, we’ll help one another to overcome them.
#32385
A
Wherever
B
Whatever
C
However
D
Whenever