The computer system __________ suddenly while he was searching for information on the Internet.
#13080
A
broke down
B
broke out
C
broke up
D
broke in
推荐题目
 Linda gave us a vivid _____ of her trip to Mount Lu after her return.
#13062
A
account
B
explanation
C
imagination
D
direction
 Paper bags produced every year are ______ the world’s production of vehicles.
#12437
A
as three times heavy as 
B
three times weight of
C
three times the weight of
D
three times as heavier as