14．Theaverage of 4，5and 9is 6．

分析 4、5、9的平均數(shù)是6．

解答 答案：average
根據(jù)句意以及首字母的提示可知，此處的意思是：平均數(shù)；故應(yīng)填average的某種形式；此處在句中作主語(yǔ)，由于謂語(yǔ)動(dòng)詞使用了第三人稱單數(shù)形式；另外，雖然average之前有時(shí)可以加不定冠詞an，但它卻是不可數(shù)名詞；故答案為average

點(diǎn)評(píng) 做類似的題時(shí)，應(yīng)注意兩點(diǎn)：一是根據(jù)句意并結(jié)合首字母的提示判斷出需要填寫的單詞；二是通過(guò)分析句子的結(jié)構(gòu)，確定應(yīng)填單詞的形式；因此在平時(shí)的學(xué)習(xí)中，應(yīng)牢固記憶單詞的拼寫；并且熟練掌握一些的語(yǔ)法知識(shí)；例如：本題考查了主謂一致的用法．

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