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桑代克根据实验提出了三条主要的学习定律：、、__。

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Who says your job leaves you no time to hit the gym A detailed new study of U. S. physical activity patterns shows that men who work full-time—whether their jobs are active or sedentary— end up getting more exercise than healthy working-age men without a job. The new study comes from researchers at the National Institutes of Health (NIH). As part of the National Health and Nutrition Examination Survey in 2003, some 1,800 working-age adults were asked questions about their lifestyle and work habits, and, most importantly, they then agreed to wear an accelerometer—a device to measure their physical activity—over the course of several days. Those data from the accelerometers provide a rare opportunity to nail down how much activity the typical American actually does. They show that men or women who work in active jobs do more physical activity on weekdays than men or women working in sedentary jobs: that’s perhaps not surprising, but the NIH researchers suggest that it still matters because of an ongoing shift in the economy toward sedentary work. The more surprising finding is the one that compares full-time workers to people who don’t work. The study shows that men with full-time jobs do more physical activity than healthy men without jobs. ("Healthy men", in this case, were those men who said their primary reason for being out of work—was something other than health or disability.) In fact, even sedentary full- time workers performed more weekday physical activity overall than the healthy non-workers. The results looked very different for women. Women in sedentary jobs did less physical activity on weekdays than their healthy non-working peers. So what drives the gender (性别) difference The study looks at the pattems, and unfortunately can’t provide too much detail about their causes. There could be many possible answers, including, perhaps, different abilities to pay for leisure time activities or different attitudes about work and physical activity. It could also be that more non-working women than men are choosing to be at home running around full-time after the kids. But the NHK researchers do find evidence, they write, to suggest that, whatever causes the difference, healthy non-working women "are replacing work with active pursuits whereas" —for some reason— "non-working men generally are not. \ Who are the least physically active according to the study

A. Men with sedentary jobs.
B. Men with active jobs.
C. Healthy women with no jobs.
D. Healthy men with no jobs.

分部1的路由器配置为ethemet0/0端口接内部网络，sera10/0端口接外部网络。下列配置指定内外网端口，完成下列配置，将答案填写在答题纸相应的位置。Router (config) # inter eth0/0Router (config-if) # (4) Router (config-if) # inter seria100/0Router (config-if) # (5) Router (config-if) # exitRouter (config) #

One of the keys to speaking English like a native is the ability to use and understand casual expression, or idioms. American English is full of idioms. You won’t learn these expressions in a standard textbook. But you will hear them all the time in everyday conversations. You’ll also meet them in books, newspapers, magazines, and TV shows. Idioms add color to the language. Master idioms and your speech will be less awkward, less foreign. You’ll also understand more of what you read and hear. Often a student of English tries to translation idioms word-for-word, or literally. If you do this, you can end up asking, "What could this possibly mean" This is why idioms are difficult: they work as groups of words, not as individual words. If you translate each word on its own, you’ll miss the meaning and in many cases end up with nonsense.

辨析题：设计“组织者”的目的，是为新的学习任务提供观念上的固定点，所以“组织者”一定呈现在要学习的材料之前。