---Will people live to be 300 years old?-.A. No, they aren’tB. No, they won’t C. No, th

---Will people live to be 300 years old? --- .
A. No, they aren’t
B. No, they won’t
C. No, they don’t
D. No, they can’t

A. No, they aren’t(答案→)B. No, they won’t C. No, they don’tD. No, they can’t解析：考查情景交际。“人能活到300岁吗？”一般疑问句的回答应该“怎么问怎么答”，故根据问句可知，答语用will的相应形式。否定回答用won’t，故选B 。

这下我知道了