问题
单项选择题
A. Now American men can live five years longer than expected,
B. An ordinary American woman lives a happier life.
C. In America, there are more females than males.
D. In America, women live longer than men.
答案
参考答案：D
解析：
An average American male is expected to live 75.4 years, while the life expectancy of a female can be 80.4 years.