9．Health problems are closely connected with bad eating habits and a ______ of exercise．（　　）
A．LimitB．lackC．needD．demand

分析 健康問題與不良的飲食習(xí)慣和缺乏鍛煉有緊密的聯(lián)系．

解答 答案B．選項(xiàng)中的這四個(gè)詞都可以作為名詞使用，它們的意思分別是：limit"限制，局限性"；lack"缺乏"；need"需要"，demand"要求，需求"．a(chǎn) limit of意思是"…的限制"；a need of 和a demand of 是"需要"的意思；而a lack of sth．意思是"缺乏…"，符合句子所表達(dá)的意思，故答案選B．類似的短語有：a lack of food/money/skills 缺乏食物/金錢/技能

點(diǎn)評(píng) 本題考查名詞的詞義辨析．名詞詞義辨析題一直都是高考考查的一個(gè)熱點(diǎn)，它注重考查考生結(jié)合語境準(zhǔn)確選用詞語的能力．由于英語詞匯豐富，且用法多變，考生掌握起來有較大難度，因此在平時(shí)應(yīng)注意詞匯的積累，理解詞語的含義及其常見的習(xí)慣搭配，再聯(lián)系句子所表述的意義和語境，選出正確的答案．

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