第1题: [单项选择]It's incredible that France ______ the EU Constitution. A. rejects B. rejected C. has rejected D. should have rejected 参考答案:D 答案解析:[解析] 虚拟语气题。It's incredible后面的that从句一般用虚拟语气,表示强烈的语气。同样要用虚拟的还有It's a pity,It's a shame,It's strange,It
第22题: [单项选择]某人的无效腔容量为125ml,肺通气量为7500ml/min,呼吸频率为每分钟20次,其心排出量为5000ml时的通气/血流值应为 A. 0.9 B. 0.8 C. 1.0 D. 1.1 参考答案:C 答案解析:肺泡通气量是每分钟吸入肺泡的新鲜空气量(等于潮气量和无效腔气量之差)乘以呼吸频率。肺泡通气量=(潮气量-无效腔气量)×呼吸频率=肺通气量-(无效腔气量×呼吸频率)=7500-2500=5000(ml)