___________after the Second World War that test pilots first attempted to break the "Sound barrier".

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问题 ___________after the Second World War that test pilots first attempted to break the "Sound barrier".

选项 A、It was shortly
B、Until shortly
C、Shortly was it
D、Shortly

答案A

解析 本题考查强调句型It is/was…that…的用法。shortly是副词,做状语,表示时间之早。全句译为:第二次世界大战后不久,试飞员们第一次尝试打破声障(即超音速飞行)。
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