None of the five centenarians have any children. （）

It is not hard to find five 100-year-olds living in one...

单项选择题It is not hard to find five 100-year-olds living in one place in America. （）

Currently about 70,000 people are aged 100 or above in ...

单项选择题Currently about 70,000 people are aged 100 or above in America. （）

It is virtually impossible to persuade him to apply f...

单项选择题It is virtually impossible to persuade him to apply for the job.