单选题 Questions 14 to 17 are based on the following passage.

单选题 According to the passage, how many years do we live longer than our great grandparents?

A、 7 years.
B、 20 years.
C、 30 years.
D、 Many years.

【正确答案】 B

【答案解析】[解析] 听力原文第三句提到Today, when we live 20 years longer than our great-grandparents，直接根据原文得出答案。故答案为B。

单选题 At what age are women healthiest?

A、 From 15 to 20.
B、 From 15 to 25.
C、 From 15 to 30.
D、 From 20 to 30.

【正确答案】 C

【答案解析】[解析] 听力原文第二段提到For men, we are healthiest from 15 to 25; for women, from 15 to 30.可知女人最健康的年龄段为from 15 to 30。属于文章细节题。故答案为C。

单选题 Which of the following is true?

A、 Scientists have come to know why women can live longer than men.
B、 After 30, people view happiness as a goal in itself.
C、 Scientists and artists" peak time of creativity are different.
D、 The ups and downs of life can be predicted.

【正确答案】 C

【答案解析】[解析] 该题属于综合题型，需要归纳段落主要内容。文中存在相关的核心句子，就是Generally between 30 and 39, but the peak varies with different professions. 可知不同领域的黄金年龄不同。符合C项意思。其他答案均不能在文章中找到相关支撑内容。故答案为C。

单选题 How many years do females live longer than males according to the passage?

A、 15 years.
B、 20 years.
C、 7 years.
D、 We don"t know.

【正确答案】 C

【答案解析】[解析] 本题的关键是要听懂outlive的意思是：比……长命，然后根据：women mysteriously outlive men by seven years. 就可以判断答案为C。