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17.B)请根据句意从方框中选择合适的词,并用其适当形式填空,使句子通顺.
    polite   fog   develop  two  they
51.ThesecondYouth Olympic Games will be held in Nanjing between August 16and 28,2014.
52.You won't be welcomed by anyone if you behave soimpolitelyin public.
53.It was evenfoggierthis morning.As a result,all the highways were closed.
54.This year's new policy of the high school recruitment(招生) can lead to a better balanceddevelopmentof education.
55.The storiesthemselves are not very interesting,but the music sounds wonderful.

分析 51.第二届青年奥运会将于2014年8月16日和28日期间在南京举行.
52.如果在公共场所你行为如此粗鲁,你将不会受人欢迎的.
53.今天早晨雾更严重了,结果所有的高速公路被关闭了.
54.今年高校招生的新政策可以引导一个更好的教育平衡发展.
55.这些故事本身不是很有趣,但是音乐听起来很优美.

解答 51.second  52.impolitely 53.foggier  54.development  55.themselves
51.答案:second,two的序数词形式,根据句意,可知是说第二届青年奥运会,two是基数词,应用其序数词形式second"第二".
52.答案:impolitely,考查副词修饰动词,根据句意,该句是说在公共场所,你做的如此粗鲁,polite形容词"有礼貌的",反义词impolite"无礼的,粗鲁的",而本句中behave"表现,行为,举止"是动词,应用副词修饰,故填副词形式impolitely.
53.答案:foggier,考查比较级用法,根据句意,该句是说今天早晨雾更加严重了,even"更加"修饰比较级,fog名词"雾",本句应用其形容词形式foggy,其比较级形式是foggier.故填foggier.
54.答案:development,develop的名词形式,根据句意,可知意思是说一个更好的教育平衡发展,develop动词"发展",而"一个…发展"应用名词形式development.
55.答案:themselves,考查反身代词,根据句意,故事本身不是很有趣,可知应用they的反身代词形式themselves"本身,自己".

点评 仔细分析句子,结合句意,利用相应的语法知识,给出正确的单词形式.

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