根据短文内容，从短文后的七个选项中选出能填人空白处的最佳选项。选项中有两项为多余选项。Does a Dog Help a Teen wit,高中三年级,英语试题,序数词考点,好技网

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根据短文内容，从短文后的七个选项中选出能填人空白处的最佳选项。选项中有两项为多余选项。
Does a Dog Help a Teen with Low Self-esteem?

A dog is known as man’s best friend for good reason. Loyal and affectionate _,a dog companion can enrich its owner’s life in many ways, 1_____ Many teenagers suffer from periods of low self-esteem (自尊）as they try to navigate the wavy waters of adolescence and deal with all of its associated highs and lows.
A teenager who lacks self-esteem may feel isolated from his peers and unable to tell his parents about personal issues. The company of a dog can be a huge comfort and ease feelings of loneliness and awkwardness. A dog offers genuine unconditional love. 2_____
All dogs need exercise，so taking his clog for a walk is the perfect opportunity for a teenager to get outdoors and benefit from fresh air and physical activity. Exercise allows people to take control of their bodies，which is often the first step toward regaining control of other aspects of their life，says mental health specialist Dr. Alan Cohen. 3 Exercise releases chemicals called endorphins (内排肽）into the brain_? which create positive responses in the body ，including improved selfesteem.
Dogs can help teenagers be more sociable and make new friends, suggests HELPGUIDE. 4_____ A dog is a great ice-breaker ，avoiding awkward social situations and putting the teenager at ease with people he meets. The more confident the teen becomes when out and about with his clog ，the more his self-esteem will improve.
5_____ If a teenager is suffering from depression or developing dangerous habits such as alcohol and drug abuse ，more extreme action may be required. In these cases ，professional help should be sought and all treatment plans considered. Parents who suspect that their teen’s low selfesteem is a sign of a far more serious problem should ask a suitably qualified health professional for advice.

A．In some cases, having a dog will not help with a teenager’s low self-esteem.

B．It simply accepts its owner for who he is and doesn’t judge, question or criticize.

C．Pets offer an unconditional love that can be very helpful to people with depression.

D．You don’t have to worry about hurting your pet’s feelings or getting advice you don’t want.

E. In particular, someone with low self-esteem may find a pet dog to be extremely beneficial.
F. A teen may meet his peers while walking his dog in the park or taking part in a dog training class.
G. Many forms of exercise besides walking can be enjoyed with a dog, such as cycling, jogging and throwing a ball.

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本试题 “根据短文内容，从短文后的七个选项中选出能填人空白处的最佳选项。选项中有两项为多余选项。Does a Dog Help a Teen with Low Self-esteem?A dog is known a...” 主要考查您对
序数词
等考点的理解。关于这些考点您可以点击下面的选项卡查看详细档案。

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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