第12题: [单项选择]支气管哮喘的肺功能异常,主要表现在 A. 肺活量减少 B. 最大通气量增加 C. 第一秒钟用力呼气容积减少 D. 弥散量下降 E. 功能残气减少 参考答案:C 答案解析:支气管哮喘属阻塞性通气功能障碍,阻塞性通气障碍的最大特点就是流速降低(FEVl/FVC%降低),因此可以派生出时间肺活量、第一秒用力呼气容积减少等答案项。这就是解题的关键。支气管哮喘时可有肺活量减少、
第14题: [单项选择]When he started his company, Don______. A. spent most of his time on test flights B. was mainly interested in designing balloons for advertising C. worked hard, whereas now he relaxes D. built the balloons at home 参考答案:D 答案解析:细节理解题 文章第三段第三行提到“He started the business in the basement of the large Victorian house,where he live