13．It is said that ________ to classic music may be helpful in improving teenagers'taste．（　　）
A．exposedB．exposingC．being exposedD．having exposed

分析 據(jù)說(shuō)接觸古典音樂(lè)對(duì)改變青少年的喜好有幫助．

解答 答案C  分析句子結(jié)構(gòu)，it 為形式主語(yǔ)，真正的主語(yǔ)為空格后面的從句．結(jié)合句意，本題表達(dá)"據(jù)說(shuō)接觸古典音樂(lè)對(duì)改變青少年的喜好有幫助"，sb．be exposed to sth．固定搭配，意為"接觸某物"，排除B、D項(xiàng)；分析句子可知，_____ to classic music 作主語(yǔ)從句的主語(yǔ)，所以要用動(dòng)名詞的被動(dòng)形式，即 beingexposed to classic music，故正確答案為C．

點(diǎn)評(píng) 對(duì)于此類非謂語(yǔ)動(dòng)詞的考查，要求學(xué)生不僅對(duì)非謂語(yǔ)動(dòng)詞的知識(shí)理解透徹，而且要求學(xué)生掌握一些與非謂語(yǔ)動(dòng)詞有關(guān)的固定搭配，這就需要平時(shí)多加積累．

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