题目内容：

阅读表达(计10分)

A recent survey found that only 9 percent of teens in the United States smoke cigarettes(香烟). That’s down from 23 percent in 2000. While this is good news for the US’s overall health, tobacco(烟草)use is still a problems.

Cigarettes can cause many diseases. Although they know about the health problems, teenagers still smoke. According to the American Lung Association(美国肺病协会), every day almost 3,900 children under 18 years of age try their first cigarette, and more than 950 of them will become daily smokers. If it goes on like this, 5.8 million children alive today will die as a result of smoking.

The Truth Campaign is working to end teenage smoking. Their latest activities uses social media(媒体) to remind teenagers of the dangers of smoking. “If we all join forces, smokers and non-smokers, we can end smoking once and for all,” the campaign website explained. The campaign encourages teens to learn the facts. “ We are not here to criticize(批评)your choices, or tell you not to smoke. We are here to arm everyone, smokers and non-smokers, with the tools to make change,” they say.

根据短文内容，回答问题：(答案不超过5个单词)

1.According to the survey, how many American teenagers smoked in 2000?

______________________________________________________________

2.What can cigarettes cause?

______________________________________________________________

3.What do almost 3900 children under 18 years of age do according to the association?

______________________________________________________________

4.What’s the aim of the Truth Campaign?

______________________________________________________________

5.What does the campaign encourage teens to do ?

______________________________________________________________