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        1. 【題目】Middle school students have to reach a certain ________(標(biāo)準(zhǔn))in exams, or they will not graduate.

          【答案】standard

          【解析】

          句意:中學(xué)生必須在考試中達(dá)到一定的標(biāo)準(zhǔn),否則他們就不會(huì)畢業(yè)。

          根據(jù)句意,分析句子成分可知,此處缺少名詞,所以用名詞“標(biāo)準(zhǔn)”standard,空前有不定冠詞a,所以standard用單數(shù)形式,故填standard。

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