17．Scientific（science） research is widely claimed to be the source of high standard of living in US．

分析 人們普遍認(rèn)為，科學(xué)研究是美國(guó)生活水平較高的一個(gè)原因．

解答 答案是scientific．
考查形容詞．名詞research前面用形容詞scientific修飾，表示"科學(xué)的"．句意是：人們普遍認(rèn)為，科學(xué)研究是美國(guó)生活水平較高的一個(gè)原因．故答案是Scientific．

點(diǎn)評(píng) 本題考查單詞填空．首先要根據(jù)語(yǔ)境明確句意，然后再根據(jù)相關(guān)語(yǔ)法決定正確答案．

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