题目内容
【题目】选择正确的答案（ ）
A.250.
B.150.
C.50.
【答案】A
【解析】【听力原文】W: I think people will live to be 150 years old in the future.
M: Oh, I think so. But Mike thinks they will live to be 250 years old.
Q: How old does Mike think people will live to be in the future?
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