【题目】People ran out __________ as fire tore through the building.
A.in vain
B.in rags
C.in one voice
D.in terror

【答案】D
【解析】考查介词短语辨析。句意：当大火烧毁楼房时,人们惊恐地跑了出来。A. in vain徒劳地；B. in rags衣衫褴褛地；C. in one voice完整无损地；D. in terror惊恐地。根据语境，故选D。