We have to work extra hours to finish our plan, _______ the boss can’t allow us to take a day off tomorrow.
A．soB．orC．a(chǎn)ndD．but
B

試題分析：考察連詞辨析。A于是；B否則；C并且；D但是；句意：我們不得不加班來(lái)完成我們的計(jì)劃，否則老板不可能允許我們明天休息的。根據(jù)句意說(shuō)明B項(xiàng)正確。
點(diǎn)評(píng)：連詞的詞義辨析要放在上下文的語(yǔ)境中進(jìn)行，要注意上下文的語(yǔ)義的串聯(lián)以及邏輯關(guān)系的推理，特別要注意一些連詞和時(shí)間狀語(yǔ)的固定搭配。
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