英語四級閱讀專項練習原文

　　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.

　　英語四級閱讀專項練習題目

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

　　a.traffic accidents

　　b.smoking-related desease

　　c.murder

　　d.all of these

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

　　a.75 b.23 c.30 d.3000

　　3.By "dropout" the author means______.

　　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 ________.

　　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 ________.

　　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

　　英語四級閱讀專項練習答案

　　bdbdb