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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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D："when" must refer to a time period; "it took less than 35 years" isn't a time period - eliminate.
C："In less than the 35 years" is idiomatically incorrect. The proper idiom would be "In the less than 35 years" - and would change the meaning of the sentence - eliminate.
B："Their descendants" doesn't modify those who did the releasing, so "since releasing" is wrong - eliminate.
E：The whole thing sounds horrible (always a good reason to eliminate a choice), the tenses don't make any sense and "it took less" certainly doesn't go with "and then" - eliminate.
Do NOT use the past perfect in the "since" clause,
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