A recent study found that only 9% of teenagers in the United States smoke cigarettes．That's down from 23% in 2000．While this is good news for health，smoking is still a problem．
   Cigarettes have been linked to cancer，lung disease，heart conditions，and high blood pressure．Although teenagers know these bad effects，they still smoke．Every day almost 3，900 children under 18 years of age try their first smokers．If it continues like this，5.8 million children alive today will die as a result of smoking．
   The campaign（運動） is working to end teenagers smoking．It uses social media to spread information about the dangers of smoking． "If we all join force---smokers and non-smokers---we can end smoking once and for all，" the campaign leader says．The campaign encourages teenagers not to judge，but instead to learn the facts． "We're not here to comment your choices，or tell you not to smoke．We're here to arm everyone with the tools to make a change，" they say．
   Anti-smoking campaigns may have a new problem to worry about．A 2013 report found that the use of electronic cigarettes is on the rise．High school students who reported ever using an electronic cigarette rose from 4.7% in 2011 to 10% in 2012． 'The increased use of e-cigarettes by teenagers is deeply troubling．Scientists are still researching exactly how harmful e-cigarettes are．
   Harmful effects of smoking do not end with the smoker．About 88 million non-smoking Americans，including 54% of children between the ages of 3 and 11，are uncovered to second-hand smoke．Even brief exposure can be dangerous．
   Anti-smoking campaigns have become more popular．Some colleges and other outdoor areas across the country haven't allowed smoking altogether．
   As of October 27，21，615 children and teenagers have joined the Truth campaign and promised not to smoke．The group hopes that they can give young people the knowledge to be the generation（一代） that ends smoking．

（1）What does the second paragraph mainly tells us？

B

B

A．Smoking leads to illnesses．
B．Teenage smoking is still a problem．
C．Some children will die of smoking．
D．Teenagers know little about smoking．
（2）The underlined words " once and for all" in Paragraph 3 probably mean

C

C

．
A．a(chǎn)head of time
B．before long
C．for ever
D．once in a while
（3）What makes anti-smoking campaigns worry a lot now？

D

D

A．Teenagers' wrong choices．
B．Exposure to second-hand smoke．
C．Harmful effects of electronic cigarettes．
D．The increasing use of electronic cigarettes．
（4）Which of the following is NOT true according to the passage？

D

D

A．The campaigns have become more popular among teenagers．
B．The social media helps to tell the dangers of smoking．
C．The second-hand smoke is also bad for children．
D．Scientists know exactly how harmful e-cigarettes are．
（5）What is the passage mainly about？

A

A

A．Ending teenagers smoking
B．Anti-smoking campaigns
C．A new Problem to worry about
D．The harm of second-hand smoke