16-year-old students in England should understand fifteen _______ words.
A.thousandB.thousandsC.thousand ofD.thousands of
A

試題分析:英語中數(shù)詞表示概數(shù)時,后面加s,和介詞of搭配使用。用原形時表示具體數(shù)字和數(shù)詞搭配使用。句意:英國16歲的學(xué)生需要理解一萬五千個單詞。結(jié)合語境可知本句描述具體數(shù)字,故選A。
點(diǎn)評:英語中關(guān)于hundred、thousand和million三個數(shù)詞的用法只需要記住一個原則就行。即;前有數(shù)詞則不加s,加s必加of。
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