听力原文: About 70 million Americans are trying to lose weight. That is almost 1 out of every 3 people in the United States. Some people go on diets. This means they eat less of certain foods, especially fats and sugars. Other people exercise with special equipment, take diet pills, or even have surgery. Losing weight is hard work, and it can also cost a lot of money. But why do so many people in the United States want to lose weight?
Many people in the United States worry about not looking young and attractive. For many people, looking good also means being thin. Other people worry about their health. Many doctors say being overweight is not healthy. But are Americans really fat?
Almost 30 million Americans weigh at least 20 percent more than their ideal weight. In fact, the United States is the most overweight country in the world. "The stored fat of adult Americans weighs 2.3 trillion pounds," says University of Massachusetts anthropologist George Armelages. He says burning off that stored energy would produce enough power for 900,000 cars to go 12,000 miles.
Losing weight is hard work, but most people want to find a fast and easy way to take off fat. Bookstores sell lots of diet books. These books tell readers how to lose weight. Each year, dozens of new books like these are written. Each one promises to get rid of fat.
(30)
A.To cat nothing.
B.To work hard.
C.To have surgery.
D.To cost a lot of money.
第1题
(56) IM系统一般采用两种通信模式,MSN Messager、ICQ、Yahoo Messenger等主流IM软件在传递文件等大量数据业务时一般使用哪种通信模式?()
A) P2P
B) B/S
C)服务器中转
D)C/S
第3题
A.服务器中转
B.C/S
C. B/S
D.P2P
第4题
第5题
第7题
A.P2P
B.B/S
C.服务器中转
D.C/S
第9题
(56) MSN、ICQ、AIM和Yahoo Messenger等主流即时通信软件的文本消息多使用()模式。
A)客户机/客户机
B)客户机/服务器
C)服务器/客户机
D)服务器/服务器
第10题
MSN、ICQ、AIM和Yahoo Messenger等主流即时通信软件的文本消息多使用()模式。
A)客户机/客户机
B)客户机/N务器
C)服务器/客户机
D)服务器/N务器
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