Theaverage of 4.5and 9is 6．题目和参考答案——青夏教育精英家教网—

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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