Children’s brains can’t develop properly_______ they lack protein(蛋白质).
#73274
A
when
B
since
C
because
D
unless
推荐题目
Electronic devices such as iPods and headphones can do great harm to our hearing if _______ improperly.
#67875
A
being used
B
used
C
to be used
D
having been used
--Are you sure ____ you have seen this man?---Yes, I’m quite sure ___that.
#71728
A
that, about
B
/, to
C
of, about
D
about. of
“I’m certainly more and more to the conclusion that Iraq has, ____ they maintained（断言）, destroyed almost all of _____ they had in the summer of 1991.” Blix said.
#74139
A
which, what
B
as, which
C
as, that
D
as, what
I won’t change my belief _________ success comes to those who act．
#67503
A
that
B
which
C
where．
D
how
He loves his parents deeply, ________ are very kind to him.
#69736
A
both of them
B
both of who
C
whom
D
both of whom