返回

高中三年级英语

首页
  • 完形填空
    根据短文内容,从短文后的选项中选出能填入空白处的最佳选项。选项中有两项多余选项。
    ________小题1:_______________: less red meat and more fibre, less saturated fat(饱和脂肪) and more fruit and veg, right? Wrong, according to a controversial new book by nutritionist Zoe Harcombe.In the book, Harcombe charts her careful journey of research into studies that underpin (巩固)dietary advice — and her myth(误区)-breaking conclusions are surprising.                                
    Myth: ________小题2:_________.
    ‘Real fat is not bad for us,’ says ¬Harcombe. ‘It’s man-made fats we should be demonising. Why do we have this idea that meat is full of saturated fat? In a 100g pork chop, there is 2.3g of unsaturated fat and 1.5g of saturated fat.
    Myth: We should eat more fibre.
    For three decades, we have eaten fibre into our bodies to help us feel full and keep our digestive systems moving. ______小题3:________, says Harcombe.
    The advice to eat more fibre is put forward along with the theory that we need to clean our ¬digestive systems. But essential minerals are absorbed from food while it is in the intestines(肠道), so why do we want to wash everything out? Concentrate on not putting bad foods in.
    Myth: You need to eat five portions of fruit and veg a day.
    ‘Five-a-day is the most well-known piece of nutritional advice,’ says ¬Harcombe. ‘You’d think it was based on firm evidence of health benefit. _______小题4:_______
    ‘Five-a-day started as a marketing campaign by 25 fruit and veg companies and the American National Cancer Institute in 1991. There was no evidence for any cancer benefit.’
    Myth: Fruit and veg are the most nutritious things to eat.
    Apparently not. Harcombe allows that vegetables are a great addition to the diet — if served in butter to deliver the fat-soluble(dissolved) vitamins they contain — but ¬natural sugar, the fruit sugar in fruit, goes straight to the liver and is stored as fat.
    __________小题5:____________, says Harcombe, who adds: ‘Vitamins and minerals in animal foods — meat, fish, eggs and dairy products — beat those in fruit hands down.’
    A.want to lose weight ? Don’t trust these.
    B.We think we know what to eat.
    C.This is not a good idea.
    D.Fat is bad for us
    E. Think again
    F. We need take more exercise
    G. Fruit is best avoided by those trying to lose weight

    本题信息:英语完形填空难度一般 来源:未知
  • 本题答案
    查看答案
本试题 “根据短文内容,从短文后的选项中选出能填入空白处的最佳选项。选项中有两项多余选项。________小题1:_______________: less red meat and more fibre, less s...” 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