第15题: [单项选择]呼吸性酸中毒的特点是 A. pH↑,CO2CP↑ B. pH↓,CO2CP↓ C. pH↑,CO2CP+ D. pH↓,CO2CP↑ E. pH正常,CO2CP↓ 参考答案:D
第16题: [单项选择]资本积累率指标的计算公式为()。 A. 本年所有者权益增长额/年初所有者权益×100% B. 本年所有者权益增长额/上年所有者权益×100% C. 本年所有者权益增长额/企业历史最高水平的权益增长额×100% D. 本年所有者权益增长额/国际平均水平的权益增长额×100% 参考答案:A
第18题: [单项选择]Questions 29 to 31 are based on the passage you have just heard. A. It limited their supply of food. B. It made their eggshells too fragile. C. It destroyed many of their nests. D. It killed many baby bald eagles. 参考答案:B 答案解析:[听力原文]29-31 America’s national symbol—the Bald Eagle—almost went extinct 20 years ago. But it