[填空题]Proper Physical Labor

[填空题]Proper Physical Labor
In the past people had to use their physical bodies in the course of their normal work. But today someone may get up, go to work in a car, then sit down, get up to go home in the car and when arriving at home, sit down again for the rest of the day. In such a life there is no physical labor. This physical inactivity is one of the main reasons for a host of diseases. Sport, running, walking and other things must be added to our life if our normal work does not require us to exert ourselves physically.
Going to Sleep When One Feels Sleepy
This may sound simple, but many people stay up late even when their body is telling them that it is time to sleep. Yoga doctors also say that it is better to sleep in the night and be active during the day. However, people such as students will take coffee and stimulants to study late into the night. Others develop the habit of remaining active at night and sleeping during the day. While we can do thi

[简答题]Physical distribution

[单项选择] Labor Force The labor force is the part of a nation’’s population that works for pay or that is looking for a paying job. In 1800, the United States had about 2 million people in its labor force. Most of them worked on farms, most of whom were men. In 1993, about 130 million Americans were in the labor force. 96 million workers were found in large cities, 46 percent of whom were women. New Kinds of Jobs In the twentieth century, the U. S. labor force has undergone many changes. One of the most significant of these changes is in the decline in the number of blue collar jobs and the rise in the number of white-collar jobs. A blue-collar job involves manual or outdoor labor. Blue-collar workers include factory assemblers and welders; carpenters, plumbers(水暖工), mechanics, and painters; construction workers, and truck drivers. Although the number of blue-collar workers increased in the twentieth century, the future will see a declining need
A. Y
B. N
C. NG