Ask any group of teenagers in the UK what they most like to eat, and foods like pizza, burgers and chips are always mentioned.
But what teenagers like to eat is not necessarily what they should be eating. According to the National Diet and Nutrition (营养) Survey, far too many  young people in the UK between the ages of 4 and 18 eat too much fat, sugar and salt in their diet and take in too many calories. And their intake of starchy carbohydrates (含淀粉的碳水化合物), fiber, iron, vitamins and calcium (钙) is too low.
For a growing body, eating foods containing plenty of calcium, such as milk, yoghurt and cheese, is very important as calcium is essential for the development of healthy, strong bones. Similarly, foods that are rich in iron are good for young rapidly developing bodies, so red meat, bread, green vegetables, and dried fruit are also good to eat.
It is during our teenage years that lifestyle habits can become entrenched (根深蒂固的), so it is important that young people are educated about what foods are good for them. In 2005, in order to change eating habits and open teenagers' minds to new tastes, chef Jamie Oliver started a "Feed Me Better" project. As part of a television series, "Jamie' s School Dinners", he worked with teachers and cooks in a number of schools across the UK to provide more nutritious school meals. Although some teenagers and parents refused to have a try at first, the project went very well and helped to influence governmental policy on nutritional standards for school meals.
No one expects to end the teenage love affair with fast and junk food but, hopefully, if projects like "Feed Me Better" continue to give out the right messages, more young people will understand the importance of eating healthily.

What problem do teenagers in the UK have?

A．Most of them are too fat.

B．Most of them eat too little.

C．Many of them don' t eat healthily.

D．Many of them are short of exercise.

The underlined word "essential" in Paragraph 3 is closest in meaning to"       "

A．difficult	B．possible
C．common	D．necessary

According to the text, the "Feed Me Better" project _      _

A．proved to be a success

B．taught teachers how to cook

C．was started by the government

D．was started at Jamie's school first

Which of the following opinions does the author probably agree to?

A．Lifestyle habits are difficult to change.

B．Too much red meat is also bad for health.

C．Teenagers should learn to feed them better.

D．Teenagers should stop eating fast and junk food.