When the elevator doors open, stand aside and let everyone out ________ you try to get in.
A．unlessB．a(chǎn)lthoughC．untilD．before
D

試題分析：考查連詞：A. unless 除非B. although雖然C. until直到D. before在…前面，…才…,句意：當(dāng)電梯門打開的時(shí)候，要站在一邊，讓大家出來你才能進(jìn)去。選D。
點(diǎn)評：此題主要考查連詞的辨析，選擇連詞主要是看前后句的關(guān)系，因果關(guān)系用表因果的連詞，轉(zhuǎn)折關(guān)系用轉(zhuǎn)折連詞，并列關(guān)系用并列連詞，要求考生具有一定的句子分析能力和詞義辨析能力。
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