20．I'd like to thank you for the great ______ of being addressing this assembly，sharing my opinion of living a low-carbon life．（　　）
A．privilegeB．principleC．possibilityD．preference

分析 我很榮幸地感謝您給我在這次大會(huì)上發(fā)言的機(jī)會(huì)，來(lái)分享有關(guān)于我如何踐行低碳生活的觀點(diǎn)．

解答 答案：A．
A．privilege 榮幸，榮耀，特殊利益，優(yōu)惠待遇； B．principle 名詞．原理，原則，工作原理，法則；C．possibility 可能性；D．preference偏愛(ài)，愛(ài)好，喜愛(ài)，偏愛(ài)的事物，結(jié)合句意"我很榮幸地感謝您給我在這次大會(huì)上發(fā)言的機(jī)會(huì)，來(lái)分享有關(guān)于我如何踐行低碳生活的觀點(diǎn)．"可知，privilege符合句意，故選A．

點(diǎn)評(píng) 本題考查名詞的詞義辨析．詞匯辨析題首先要掌握各個(gè)選項(xiàng)的詞義、固定搭配、用法，然后再根據(jù)句意，結(jié)合語(yǔ)境，選出正確答案．

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