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    请认真阅读下面短文，并根据所读内容在文章后图表中的空格里填入最恰当的单词。
    When it comes to the prevention of heart disease, women need to pay attention to their own special risks. And so do men. Surprisingly, even children and teens need to be aware- or at least the parents who want to keep them safe do. Thankfully, scientists have also made great leaps in figuring out the specific prevention strategies that work best for all. So now, knowledge is your best protection.
    What Men Need to Know
    According to the American Heart Association (AHA), at least half of the people who die suddenly from heart disease each year had no clue they were sick. Some think that half of all heart attacks strike out of the blue. Not true, insists Jennifer Mieres, a spokeswoman for the AHA. A 2004 study found that at least 90 percent of first heart attacks are caused by well-known problems like high cholesterol(胆固醇) or diabetes. “If you look closely,” says she, “you’ll almost always find a risk factor that was undiscovered, ignored, or not adequately treated.”
    Lifestyle changes like adopting a healthy diet, getting out for regular exercise, avoiding tobacco, losing weight are the first line of defense.
    What Women Need to Know
    There are some special considerations for the women who are  healthy and want to make sure they stay that way. First, they shouldn’t smoke-no one should, but the habit is even harder on women’s heart than it is on men’s.
    Women who find that they are at risk should talk to their doctor about taking a statin(他汀,药物名). Indeed, statins reduce the risk of heart disease, but there has been not enough evidence that they help high-risk women and it can’t guarantee the long-term safety. So it’s worth noting that a healthy diet and exercise also reduce cholesterol.
    What Parents Need to Know
    Last year, a study showed that overweight children and teens have arteries(动脉)that look like those of an average 45-year-old. New guidelines say these children should get a cholesterol test by age ten -- and even urge doctors to consider statins for those most at risk if nothing else works. The recommendations caused oppositions. Lifestyle changes such as diet and exercise are the best strategy, says Dr. Greer, a professor at the University of Wisconsin School of Medicine. Statins should be considered only for kids in danger.
    Title: The Family Guide to a Healthy Heart
     
    Theme
    		All people, regardless of their gender(性别) and 1._____, should pay attention to their own special risks and keep some basic knowledge in mind to 2______ heart disease.
     
    Things Men Need to Know
    		Such problems as high cholesterol or diabetes3____ to most of first heart attacks.
    They should make changes in their lifestyle, like adopting a healthy diet, exercise4____ , avoiding tobacco and losing weight.
     
    Things Women Need to Know
    		5____ should be avoided, which will do more6_____ to a woman’s heart than to a man’s.
    Statins may not work on high-risk women and can’t guarantee safety in the long 7_______
    With a healthy diet and exercise, one’s cholesterol can be 8.________.
    Things Parents Need to Know
    		Research showed that overweight children and teens’ arteries are
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    • 本试题 “请认真阅读下面短文，并根据所读内容在文章后图表中的空格里填入最恰当的单词。When it comes to the prevention of heart disease, women need to pay atten...” 主要考查您对

    序数词

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    • 序数词

    序数词的概念：

    表示顺序的数称为序数词。如：first, second, third, fourth。


    序数词的构成与用法：

    1、序数词的构成：
    ①一般来说，是由相应的基数词加词尾th构成。
       例：four＋th→fourth
               six＋th→sixth
               seven＋th→seventh
               ten＋th→tenth
    ②下面这些基数词在变为序数词时，有特殊的变化。
    例：one→first
            two→second
            three→third
            five→fifth
            eight→eighth
            nine→ninth
            twelve→twelfth
    ③十位整数序数词的构成方法是将基数词的词y变成i，然后再加eth。
    例：twenty→twentieth
            thirty→thirtieth
            forty→fortieth
            ninety→ninetieth
    ④两位或两位以上的基数词变成序数词时，仅将个位数变成序数词。
    例：twenty－one→twenty－first
            thirty－five→thirty－fifth
            a hundred and fifty－three→a hundred and fifty－third

    2、序数词的用法：
    ①序数词在使用时，一般加上定冠词。
    例：the first book
            the second floor
            the third day
            the fourth week．
    ②序数词在多数情况下都用作定语，有的也可以作表语、主语和宾语。
    例：The may1st is Labour Day. 五月一日是劳动节。
            My room is on the second floor. 我的房间在二楼。
            The first is larger than the secon.（主语）第一个比第二个大。
            Read the book from the first.（宾语）从开头读这本书。
            You'll be the sixth to write.（表语）你将是第六个写的。
    ③序数词的前面可以加上不定冠词，用来表示“再一”，“又一”的意思。
    例：You may have a third try. 你可以第三次尝试。


    序数词知识体系：

     


    约数的表达方法：

    用tens/dozens/scores/hundreds/thousands/millions of 表示“几十、几百、上千、成千上万”等。
    如：The boy bought dozens of pencils.            
            Thousands of people died in the earthquake.
    注意： (A)：dozen, score, hundred, thousand, million等表示确切数量时，不用复数。
    如：five dozen (of) eggs   五打鸡蛋
            hree hundred people  三百个人

    分数词的构成和用法：

    1）分数词构成法：
    分数词（FractionalNumerals）由基数词和序数词构成，基数词代表分子，序数词代表分母。除了分子为1的情况下，序数词都要用复数形式：
    如：1/4：one-fourth
            5/9：five-ninths
            2/3：two-thirds
           17/5：three and two-fifths
           7/12：seven-twelfths
           379/8：forty-seven and three-eighths
    此外还有下面表示法：
    如：1/2：a(one) half
            1/4：a(one) quarter
            3/4：three-quarters
            9/4：two and a quarter
            3/2：one and half
            31/4：seven and three quarters


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