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Nowadays，scientists are working hard to find a best way of treating addictions ________ drugs.
A．ofB．inC．onD．to
D

試題分析：考查介詞搭配。Addiction與介詞to連用，表示對(duì)…上癮；該詞的形容詞短語(yǔ)be addictive to…沉溺于…句意：現(xiàn)在科學(xué)家正在努力找到治療吸毒上癮的最好的方法。
點(diǎn)評(píng)：由同一個(gè)詞根組成的不同的詞都是和同一個(gè)介詞連用，在英語(yǔ)中這是很常見(jiàn)的消息。在平時(shí)要加強(qiáng)識(shí)記和辨析、
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