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18．My brother wants to leave the company as it is_____I would like to expand it．（　　）
A．unlessB．sinceC．beforeD．while

分析 我哥哥（弟弟）想讓公司就這個樣子，而我想要擴展（公司）．

解答 答案：D
解析：A：除非；B：自從；由于；C：在…之前；D：然而．根據句意"我哥哥（弟弟）想讓公司就這個樣子，而我想要擴展（公司）"及所給選項分析可知，本題答案為D選項；其余選項均不符合題意．

點評 本題考查從屬連詞的辨析，做此類題目時一定要清楚各個選項的含義及用法，再結合句意選出最終答案．

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