单项选择题

For our bodies to function properly, we should

A．sleep for at least eight hours per night
B．believe that we need less sleep as we age
C．adjust our activities to the new inventions
D．be able to predict the rhythms of our biological docks

<上一题目录下一题>

热门试题

单项选择题

According to the passage, around the year 1900 most women married ______.

A．at about twenty-five
B．in their early fifties
C．as soon as possible after they were fifteen
D．at any age from fifteen to forty five

单项选择题

When she was over fifty, the late nineteenth century mother ______.

A．would be healthy enough to take up paid employment
B．was usually expected to die fairly soon
C．would expect to work until she died
D．was unlikely to find a job even if she wanted one