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【单选题】
听力原文： Police issued a stunning revision Saturday，shrinking the time between deadly explosions in the London Underground to just seconds，not 26 minutes as first reported，and saying the blasts were so powerful that none of the 49 known dead has yet been identified．Many bodies still lay buried in a rat- infested subway tunnel and frantic relatives begged for word about others still missing in the worst attack on London since World War Ⅱ．Police indicated as many as 50 victims were unaccounted for． What has the police done on Saturday?A.
Something that is surprising to all.
B.
A big change in the reported time.
C.
The sunning deadly explosions.
D.
The issue of London Bombings.
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A.
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B.
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A.
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A.
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A.
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错误
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B.
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C.
氨苯蝶啶是排钾利尿剂
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