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题库 / Prep2007E1-SC-3
Less than 35 years after the release of African honeybees outside Sao Paulo, Brazil, their descendants, popularly known as killer bees, had migrated as far north as southern Texas.
Less than 35 years after the release of African honeybees outside Sao Paulo, Brazil,
In less than 35 years since releasing African honeybees outside Sao Paulo, Brazil,
In less than the 35 years since African honeybees had been released outside Sao Paulo, Brazil,
It took less than 35 years from the release of African honeybees outside Sao Paulo, Brazil, when
It took less than the 35 years after the time that African honeybees were released outside Sao Paulo, Brazil, and then
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the time interval "three years" is modified by a clause beginning with a subordinate conjunction ("after" in (A) and "since" in (C)). Because it's modified in this way, it does not need a preposition.
choice b, since releasing African honeybees中，releasing的主语变成了their descendants. incorrect
choice d, when时间状语强调‘同时发生’，意思就变成‘释放鸟之后的35年’ 和‘后代移民到了得克萨斯南部’同时发生
choice e, 变成了并列句，也割裂了句子之间的联系。
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