___ we know some basic knowledge concerning AIDS, we can protect ourselves from being infected.
#33392
A
If only
B
Even if
C
So long as
D
Unless
推荐题目
They were surprised that a child should work out the problem____ they themselves could not.
#31497
A
once
B
unless
C
while
D
if
-Do you know the boy________ is sitting next to Peter?-Yes. He is Peter's friend. They are celebrating his ________ birthday.
#31722
A
who; ninth
B
that; nineth
C
/; nineth
D
which; ninth
Maria looked around on the playground _______ looking for something.
#32213
A
even though
B
even if
C
only if
D
as if
Father was late for work the traffic jam, and ,the boss blamed him for it.
#31801
A
as a result;as a result of
B
as a result of; as a result
C
as a result of;in other words
D
as a result; in other words