All efforts of cloning an animal will be ________ if there is not enough diversity in the group to overcome illness.
#26496
A
in need
B
in place
C
in vain
D
in case
推荐题目
As a result of __ is now known in physics and chemistry, scientists have been able to make important discoveries in biology and medicine.
#25598
A
it
B
what
C
which
D
that
----You failed again in the maths exam yesterday. ----Don’t tell Dad about it; if he knows that ,I’m dead.
#26230
A
as well as
B
as good as
C
as possible as
D
as far as
Mrs Smith finds it hard to clear up the mess, as her children are always______ whenever she tries to.
#25664
A
in the way
B
on watch
C
in sight
D
on the line