19．-Is Tom at school today？
-No，he is at home ______ he has got a bad cold．（　�。�
A．soB．orC．becauseD．if

分析 --湯姆今天在學(xué)校嗎？
--沒有，他在家，因?yàn)樗忻皣?yán)重．

解答 答案：C；
根據(jù)語境以及上下文，本題考查的是連詞的用法．根據(jù)設(shè)空處前后句的句意"他在家"和"他感冒嚴(yán)重"，可知后面一句表達(dá)是前面一句的原因，所以用連詞because引導(dǎo)原因狀語從句；故選C．

點(diǎn)評 本題主要考查連詞的用法，做此類題目一定要弄清句意，明白上下文之間的關(guān)系，才能更好地判斷出所要用的連詞．

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