19．Nowadaysglobal（全球的） warming is a serious problem．

分析 當(dāng)今全球變暖是一個(gè)嚴(yán)重的問(wèn)題．

解答 global 考查形容詞．根據(jù)句意：當(dāng)今全球變暖是一個(gè)嚴(yán)重的問(wèn)題．global是形容詞"全球的"，所以答案填global．

點(diǎn)評(píng) 本題考查形容詞的詞義．形容詞詞義一直都是高考考查的一個(gè)熱點(diǎn)，它注重考查考生結(jié)合語(yǔ)境準(zhǔn)確選用詞語(yǔ)的能力．由于英語(yǔ)詞匯豐富，且用法多變，考生掌握起來(lái)有較大難度，因此在平時(shí)應(yīng)注意詞匯的積累，理解詞語(yǔ)的含義及其常見(jiàn)的習(xí)慣搭配，再聯(lián)系句子所表述的意義和語(yǔ)境，選出正確的答案．

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