Even if the treatment ________, there is still no magic pill for patients in the late stages of AIDs.
A．doesB．usesC．worksD．helps
C

試題分析：考查動詞辨析：A. does　做，B. uses使用C. works　起作用D. helps幫助
works起作用的意思，即治療有效，如it works，就是它起作用了，選C。
點評：動詞的詞義辨析主要放在上下文的語境中進行，要注意動詞的固定搭配和上下文串聯(lián)。還要注意有的動詞一詞多義，要多記憶一些含義。
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