________ the calculation is right, scientists can never be sure that they have included all variables and modeled them accurately.
#30263
A
Even if
B
As far as
C
If only
D
So long as
推荐题目
Although he has become wealthy, Mr. Wood remains _________ he used to be ,modest and friendly .
#31983
A
which
B
where
C
what
D
that
What an unforgettable experience! I'll write it down it is still fresh in my memory．
#30193
A
since
B
while
C
after
D
until
38.The task is hard, ___, the workers managed to finish it in time.
#80393
A
therefore
B
otherwise
C
however
D
yet