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    cigar use and the significant public health consequences4 for the country，”said Dr．Richard Klausner director of the National Cancer Institute，in a statement．

    “The data are clear—the harmful substances and carcinogens in cigar smoke，like

    cigarettes，are associated with the increased risks of several kinds of cancers as well as heart and lung diseases．”he added．“In other words，cigars are not safe alternatiyes to cigarettes”and may be addictive．”

    “To those individuals who may be thinking about smoking cigars,our advice is—don’t．To those currently smoking cigars,quitting is the only way to eliminate completely the cancer， heart and 1ung disease risks，”warned K1ausner．

    According to a National Cancer Institute press release，there haven’t been any studies on the health effects on nonsmokers at cigar social events，but“…a significant body of evidence clearly demonstrates all increased lung cancer risk from secondhand smoke．”

    练习：

    1．According co the report,smoking three orfour cigars a day

    A)increases the risk of oral cancer for non-smokers．

    B)greatly increases the risk of oral cancer for smokers．

    C)increases the risk of more than one cancer for non-smokers，

    D)greatly increases the risk of more than one cancer for smokers．

    2．In the passage how many cancers are mentioned in relation to smoking cigars daily?

    A)Six．

    B)Seven．

    C)Eight．

    D)Nine．

    3.What is the main idea of the article“Cigars：Health Effects and Trends”?

    A)Whenitcomesto cancer，cigars arenotany saferthan cigarettes．

    B)Cigars may be addictive while cigarettes are not easily so．

    C)Cigars contain less harmful substances than cigarettes．

    D)Increase in cigar-smoking does not affect public health much．

    4．What is the doctors’advice to those cigar-smokers?

    A)To give it up completely．

    B)Togiveuppartofit．

    C)Not to think about it any more．

    D)To cure the diseases first．

    5．In the context of this passage,“secondhand smoke”means

    A)smoking bad-quality cigars．

    B)smoking very cheap cigars．

    C)being near cigar smokers when they are not smoking．

    D)being near cigar smokers when they are smoking．

    难度B／A级

    According to a report issued in May 1998，elderly people who have consistently high blood levels of cortisol don’t score as well on memory tests as their peers with 10wer levels of the stress hormone．What’s more．high 1evels of cortisol are also associated with shrinking of the hippocampus，a region of the brain that plays a key role in learning and memory．

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