15．House prices are usually high       famous schools lie．（　�。�
A．whenB．sinceC．whereD．if

分析 名校所在的地方房價通常很高．

解答 答案C．
when"在…時候"，引導(dǎo)時間狀語從句．since意思是"自從…以來"時，引導(dǎo)時間狀語從句；意思是"既然"時，引導(dǎo)原因狀語從句．where"在…地方"，引導(dǎo)地點狀語從句．if"如果"，引導(dǎo)條件狀語從句．分析可知前后兩句話之間是邏輯上的"地點"關(guān)系，再結(jié)合句子所表達的意思可知答案選C．

點評 本題考查從屬連詞的用法．連詞的用法辨析，要注意分析主從句之間的邏輯關(guān)系，再確定相應(yīng)的連詞，同時注意不同的連詞的語義及用法區(qū)別．

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