Oldfashioned phones matter when wireless networks in disasters.(2013·福建,28)
A. turn down
B. turn out
C. break down
D. break out
网友回答
A. turn down
B. turn out
C. break down
D. break out
解析:C
解析 句意为:当无线网络在灾难中出故障时,老式电话起很大作用。turn down关小,拒绝;turn out结果是;break down崩溃,损坏;break out(战争、火灾等)爆发。由句意知选项C正确。