14．This is the very scientist in _____ research field he has put forward a new theory．（　�。�
A．whoseB．whomC．whichD．that

分析 這就是這名在他的研究領(lǐng)域提出了一個新的理論的科學(xué)家．

解答 答案為A．本題考查定語從句中關(guān)系詞的選擇．題干中空格后面是修飾和限制名詞 the scientist的定語從句，把先行詞the scientist帶入到定語從句，完整的定語從句是"in the scientist's research field he has put forward a new theory"；可見the scientist 在從句中充當(dāng)定語，表示"…的"，故選擇whose，答案是A．

點(diǎn)評 選擇定語從句中的關(guān)系詞，首先要理解各關(guān)系詞的用法；然后找準(zhǔn)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(guān)系詞．

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