12．---Mr Li was sent to teach Chinese in an American high school last year．
---Yes，I know．He told me he would never forget his pleasant ________ while working there．（　　）
A．experimentsB．expressionsC．experiencesD．explorations

分析 -去年李老師被送到一所美國(guó)高中教漢語(yǔ)．
-是的，我知道．他告訴我他將不會(huì)忘記在那兒工作時(shí)候的令人愉快的經(jīng)歷．

解答 答案：C．根據(jù)關(guān)鍵詞Mr Li was sent to teach Chinese in an American high school last year．可以知道這是李老師的令人愉快的經(jīng)歷，experiment，實(shí)驗(yàn)；expression，表達(dá)；experience，經(jīng)歷，體驗(yàn)；exploration，探險(xiǎn)；故選C．

點(diǎn)評(píng) 解決本題的關(guān)鍵是掌握不同名詞的意義及用法，以及不同詞在不同語(yǔ)言環(huán)境中的意思，比如experience，作經(jīng)歷講時(shí)，是可數(shù)名詞；作體驗(yàn)講時(shí)，是不可數(shù)名詞．

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