考博考试

【单选题】American society is not nap (午睡) friendly. In fact, saysDavidDinges, a sleep specialist at the University of Pennsylvania School of Medicine. "There’s even a prohibition against admitting we need sleep". Nobody wants to be caught napping or found asleep at work. To quote a proverb: "Some sleep five hours, nature requires seven, laziness nine and wickedness eleven."
Wrong. The way not to fall asleep at work is to take naps when you need them. "We have to totally change our attitude toward napping", saysDr. WilliamDement of Stanford University, the godfather of sleep research.
Last year a national commission led byDement identified an "American sleep debt" which one member said was as important as the national debt. The commission was concerned about the dangers of sleepiness: people causing industrial accidents or falling asleep while driving. This may be why we have a new sleep policy in the White House.According to recent reports, presidentClinton is trying to take a half hour snooze (打瞌睡) every afternoon.
About 60 percent ofAmerican adults nap when given the opportunity. We seem to have "a midafternoon quiet phase" also called "a secondary sleep gate." Sleeping 15 minutes to two hours in the early afternoon can reduce stress and make us refresheD、Clearly, we were born to nap.
We Superstars of Snooze don’t nap to replace lost shut eye or to prepare for a night shift, Rather, we "snack" on sleep, whenever, wherever and at whatever time we feel like it. I myself have napped in buses, ears, planes and on boats; on floors and beds; and in libraries, offices and museums.
The second sentence of the last paragraph tells us that it is ______.
A、preferable to have a sound sleep before a night shift
B．good practice to eat something light before we go to bed
C．essential to make up for lost sleep
D．natural to take a nap whenever we feel the need for it

网考网参考答案：D
网考网解析：
[解析] 依据最后一段。作者想说明的是：我们感到需要时打瞌睡是非常自然的事。 document.getElementById("warp").style.display="none"; document.getElementById("content").style.display="block"; 查看试题解析出处>>