1. 根据短文理解，选择正确答案。

About 70 million Americans are trying to lose weight. That is almost one out of three people in the USA. Some people go on diets. This means they eat less of certain food, especially fat and sugar. Other people exercise, take medicine, or even have operations. Losing weight is not easy, and it can also cost a lot of money.

    But why do so many people in the USA want to lose weight? Many people worry about not looking young and attractive. Other people worry about their health. Many doctors say being overweight is not healthy. Almost 30 million Americans weigh at least 20% more than their ideal (理想的)weight.

    In fact, the United States is the most overweight country in the world. Losing weight is hard work, but most people want to find a fast and easy way to take off fat. Bookstores sell lots of books, which tell readers how to lose weight. Each year, a large number of new books of this kind arc published. Each one promises to help people get rid of fat.

1. （1）          American people are trying to lose weight.

   A . About 70% B . One third C . Almost 30 million D . About 20%
3. （2） In order to lose weight, some people try many ways EXCEPT         .

   A . eat less food B . exercise C . enjoy themselves D . take medicine
5. （3） Being overweight means         .

   A . looking young B . being unhealthy C . being rich D . looking dirty
7. （4） What is the passage mainly about?

   A . Many Americans are trying to lose weight. B . It's hard to lose weight. C . American people want to look young. D . America is the most overweight country in the world.