1．Don't come in_____ I call you．We talking about something important．（　　）
A．IfB．unlessC．becauseD．when

分析 不要進(jìn)來(lái)除非我叫你．我們正在談?wù)撘恍┲匾氖虑椋?/p>

解答 答案：B 考查連詞詞義辨析．if意為如果，unless意為除非，because意為因?yàn)�，when意為當(dāng)…時(shí)，結(jié)合語(yǔ)境應(yīng)該是不要進(jìn)來(lái)除非我叫你．故選擇B．

點(diǎn)評(píng) 考查連詞詞義辨析．比較和分析選項(xiàng)中連詞的不同含義及其用法是解答該題的關(guān)鍵；還要根據(jù)句中信息正確推測(cè)該句句意，進(jìn)而作出解答．

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