Be careful when you surf the Internet．If you download a virus into your computer ______, you will not open your files．
#27181
A
on purpose
B
by accident
C
at random
D
on average
推荐题目
He’s particular about food, I dare not serve him the dish, __________ his scolding.
#28377
A
with fear of
B
in fear of
C
for fear of
D
on fear of
He is determined to become a specialist ________ computer when he grows up.
#26767
A
for
B
in
C
on
D
about
Mr. Smith likes traveling _______; but his wife enjoys _______.
#26662
A
by train; taking a taxi
B
on train; by taxi
C
by train; by taxi
D
on train; taking a taxi
The headmaster asked the boy to apologize ______ the teacher _______ what he had done, but he refused to.
#25791
A
for; for
B
to; to
C
for; to
D
to; for
All his attempts to unlock the door were , because he was using the wrong key.
#27426
A
in return
B
in vain
C
in doubt
D
in time