12．As we have mentioned previously，we will be dedicated to solving the problem within the current framework，rather than _____ a new one．（　�。�
A．establishingB．establishC．to establishD．established

分析 正如我們先前提到的那樣，我們將致力于在目前的框架內(nèi)解決問題，而不是另起爐灶．

解答 答案：A rather than而不是，連接對稱結(jié)構(gòu)；題干中establish是和solving the problem對稱的結(jié)構(gòu)；be dedicated to致力于，后接名詞或動名詞．故選A．

點(diǎn)評 動名詞相當(dāng)于名詞，具備名詞的特征．在句中可以作主語，賓語，表語，定語等．動名詞和現(xiàn)在分詞的構(gòu)成方式一樣，但用法不同．現(xiàn)在分詞具備動詞的特征，有時(shí)態(tài)和語態(tài)的變化，學(xué)習(xí)時(shí)要注意區(qū)分和掌握．

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