About 70000000 Americans are trying to lose weight(减肥)．That is almost l out of every 3 people in the United States．Some people eat 　　1　　 food and they hardly have any fats or sweets．Others do running，exercise with machines，take medicines，or even have operations． 　　2　　 you can see losing weight is a 　　3　　 work. Why do so many people in the United States want to lose weight？

　　Many people in the United States worry about their look of the body．For many people，looking nice also means to be 　　4　　 ．Other people worry about their health as many doctors say over weight is not good．

　　Most people want to find a faster and 　　5　　 way to take off fat，and books of this kind are very popular. These books tell people how to lose weight．Each year a lot of new books like these are 　　6　　 ．Each one says it can easily help people take fat away．

　　Losing weight can be 　　7　　 ．Some overweight people go to health centers，like La Costa in California．Men and women pay several hundred dollars a day at these health centers．People live there for one week or two，taking exercises eating different foods．Meals there may be just a little．All this works for losing weight． 　　8　　 4 days on the programme，one woman called Mrs．Warren lost 5 pounds(2.27kg)．At $ 400 a day，she spent $ 320 to lose each pound．But she said she was still 　　9　　 to do so．

　　Health centers，books，medicines，operations，running and exercise machines all need a lot of money．So in the United States，losing weight may mean losing 　　10　　 too．

A．

less

B．

more

C．

nice

D．

fast