17．The young mother saw her baby fall to the ground，____ brought her heart to her mouth．（　�。�
A．itB．and whichC．thisD．and that

分析 這位年輕的母親看到她的孩子摔到了地上，這讓她的心都提到了嗓子眼．

解答 答案：D 題干中有逗號分隔，要用連詞，可以排除AC；B項并列連詞and和關(guān)系代詞which不能重復使用；D項中and連詞并列句，that指代前面的事情．故選D．

點評 指示代詞是表示指示概念的代詞，即用來指示或標識人或事物的代詞．指示代詞與定冠詞和人稱代詞一樣，都具有指定的含義，用來起指示作用或用來代替前面已提到過的名詞．指示代詞分單數(shù)（this/that）和復數(shù)（these/those）兩種形式，既可作限定詞又可做代詞．

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