17．        most parents care about is to provide the best education for their children．（　�。�
A．ThatB．HowC．WhatD．Whether[Z

分析 大多數(shù)父母關(guān)心的是給孩子提供最好的教育．

解答 答案：C  題干中most parents care about是作系動(dòng)詞的主語(yǔ)，是一個(gè)主語(yǔ)從句；從句中about缺少賓語(yǔ)，要用連接代詞．故選C．

點(diǎn)評(píng) 在句子中起名詞作用的各種從句統(tǒng)稱為名詞性從句．根據(jù)它們?cè)诰渲械恼Z(yǔ)法作用，這類從句又可分為主語(yǔ)從句、同位語(yǔ)從句、表語(yǔ)從句和賓語(yǔ)從句． 本題中what在主語(yǔ)從句中起連接作用，同時(shí)又充當(dāng)了從句的賓語(yǔ)．

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