The medicine works more effectively _______ you drink some hot water after taking it.
A．a(chǎn)sB．untilC．a(chǎn)lthoughD．if
D

試題分析：考查連詞：A. as當(dāng)…時候，因為，B. until直到C. although雖然， D. if如果，句意：如果你吃完后喝熱水的話，這個藥就會更有效。選D。
點評：做連詞的辨析關(guān)鍵是上下文的邏輯關(guān)系，是轉(zhuǎn)折，還是原因或結(jié)果，區(qū)別對待。
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