第28题: [单项选择]The relationship between exposure to ______ has not yet been determined. A. ozone and fall in lung function B. ozone and lung diseases such as asthma C. nitrogen dioxide and worse lung function D. smog and chronic bronchitis and emphysema 参考答案:D 答案解析:判断依据是来自原文中的一句话“It is suspected that long-term exposure to smog may result in chronic bronchitis(支气管炎
第29题: [单项选择]急性喉炎（） A. 发热、流涕、鼻塞、咽痛、咽充血 B. 发热、咽痛、咽充血，咽部有灰白色小丘疹、疱疹或溃疡 C. 发热、咽痛、颈部、耳后淋巴结可肿大，咽充血、眼结膜充血 D. 发热、音哑、犬吠样咳嗽，吸气性呼吸困难，咽充血 E. 发热、咽痛、咽充血，扁桃体肿大，有脓性分泌物 参考答案:D
