China has hundreds of islands，________is Taiwan．A.the largest of whichB.of which largestC.which the largestD.in which the largest
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A解析the largest of which is Taiwan是一个由of which引出的非限制性定语从句，which代 hundreds of islands，从句可理解为and Taiwan is the largest of hundreds of islands。of which／whom之前常出现形容词最高级，名词，代词(all，both，none，neither，either)等以及数词。例如：He has two sons，both of whom are doctors．他有两个儿子，他们都是医生。I have ten dictionaries，three of which were given by my brother．我有十本词典，其中三本是我哥哥给我的。