扫描二维码，直接登录
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
还没有题目讲解（毕出老师会陆续发布对官方考题的解读，请保持关注）。
b since releasing,这样看起来好像 descendant是releasing这个动作的发出人，是很奇怪的
c 用了had been 两个had been 语态错乱
d when这里代表的意思是同时发生，不对，且如果it做形式主语，（后面跟todo 或that）那么那that去哪里了
e 核心句子意思就没有对，honeybees被释放然后后代怎么样怎么样一共花了不到35年 （核心句意：在bees被释放不到35年，后代完成迁移）
e的时态也是错乱的
登录 或 注册 后可以参加讨论