The idea of fish being able to produce electricity strong enough to light a lamp is almost unbelievable, _____ several kinds of fish are really able to do this.
#34581
A
therefore
B
and
C
then
D
but
推荐题目
We’ll have a picnic in the park this Sunday _____ it rains or it’s very cold.
#79756
A
since
B
if
C
unless
D
until
______you are always optimistic and self-confident, I can't wait to make friends with you.
#30869
A
Though
B
Since
C
While
D
So
Advances in using genes as well as nanotechnology make it likely __humans will live in the future beyond ____has been possible in the past.
#34087
A
that ,which
B
what, that
C
that ,what
D
where , what
you are grown up, you should not rely on your parents.
#32830
A
However
B
Now that
C
How often
D
How long
She speaks English fluently _____ she were a native American.
#30524
A
as though
B
even if
C
as long as
D
ever since