在四六级考试中，阅读部分占据了相当大的比重，正所谓“得阅读者得天下”。同学们要想在四六级考试中脱颖而出，就必须提高自己阅读得分的得分率，为此考8英语四六级考试网为大家整理了2013年大学英语四级阅读理解练习及答案的资料，希望会对大家有所帮助。在此小编预祝大家能够顺利的通过这次考试。

　　　　Today ,as in every other day of the year ,more than 3000 U.S. adlescents will smoke their first cigarette on their way to becoming regular smokers as adults. During their lifetime,it can be expected that of these 3000 about 23 will be murdered,30 will die in traffic accidents, and nearly 750 will be killed by a smoking-related disease. The number of deaths attributed to cigarette smoking outweithts all other factors, whether voluntary or involuntary, as a cause of death.

　　Since the late 1970s, when daily smoking among high school seniors reached 30 precent , smoking rates among youth have declined . While the decline is impressive ,several important issues must be raised.

　　First, in the past several years,smoking rates among youth have declined very little. Second,in the late 1970s ,smoking among male high school seniors exceeded that among female by nearly 10 percent . The statistic is reversing.Third ,several recent studies have indicate high school dropouts have excessively high smoking rates, as much as 75 percent .

　　Finally, thouth significant declines in adolescent smoking have occurred in the past decade,no definite reasons for the decline exist. Within this context,the Naional Cancer Instiute (NCI) began its current effort to determine the most effecive measures to reduce smoking levesl among youth.

　　1.According to the author, the deaths among youth are mainly caused by _b____.

　　a.traffic accidents

　　b.smoking-related desease

　　c.murder

　　d.all of these

　　2.Every day there are over__d___high school strdents who will become regular smoker.

　　a.75 b.23 c.30 d.3000

　　3.By "dropout" the author means___b___.

　　a.students who failed the examination

　　b.students who left school

　　c.students who lost their way

　　d.students who were driven out of school

　　4.The reason for declining adolescent smoking is that __d______.

　　a.NCI has taken effective measures

　　b.smoking is prevented among high school seniors

　　c.there are many smokers who have died of cancer

　　d.none of these

　　5.What is implied but not stated by the author is that _b_______.

　　a.smoking rates among youth have declined very little

　　b.there are now more female than male smokers among high school seniors

　　c.high smoking rates are due to the incease in wealth

　　d.smoking at high school are from low socio-economic backgrounds

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