17．We should pay great attention to safety in schools because of frquent reports about accidents_______ students got injured or killed while in school．（　�。�
A．whereB．whichC．whatD．that

分析 我們應該高度重視學校的安全，因為頻繁出現(xiàn)關于在學校學生受傷和被殺的事故報道．

解答 答案為A．本題考查定語從句中關系詞的選擇．題干中空格后面是修飾和限制名詞accidents的定語從句，把先行詞accidents帶入到定語從句，完整的定語從句是"students got injured or killed in the accidents"；可見in the accidents 在從句中充當?shù)攸c狀語．定語從句中關系副詞where可指代地點在從句中做地點狀語，所以該題答案是A．B項which和D 項that是關系代詞，不能做狀語，排除；C項中what不引導定語從句，所以排除．

點評 選擇定語從句中的關系詞，首先要理解各關系詞的用法；然后找準先行詞，將先行詞帶入到定語從句；最后根據(jù)先行詞在定語從句中的作用判斷關系詞．

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