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14.Theaverage of 4,5and 9is 6.

分析 4、5、9的平均数是6.

解答 答案:average
根据句意以及首字母的提示可知,此处的意思是:平均数;故应填average的某种形式;此处在句中作主语,由于谓语动词使用了第三人称单数形式;另外,虽然average之前有时可以加不定冠词an,但它却是不可数名词;故答案为average

点评 做类似的题时,应注意两点:一是根据句意并结合首字母的提示判断出需要填写的单词;二是通过分析句子的结构,确定应填单词的形式;因此在平时的学习中,应牢固记忆单词的拼写;并且熟练掌握一些的语法知识;例如:本题考查了主谓一致的用法.

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