A. By the government only. B. Through the market only. C. By the government and through the market. D. By government officials and economists. 参考答案:C 答案解析:原文中有“You either have the choices made directly by the government,or,the choices are made indirectly
第10题: [多项选择]病历摘要:患者男性,26岁,劳累后心悸、气促2年,出现过晕厥。查体:血压140/60mmHg,心界向左下扩大,胸骨右缘可触及收缩期震颤,闻及3/6级喷射性收缩期杂音,主动脉瓣第二听诊区可闻及3/6级舒张期哈气样杂音,心尖部可闻及3/6级隆隆样舒张期杂音。主动脉瓣关闭不全的周围血管征,包括以下哪些() A. Austin-Flint杂音 B. 枪击音 C. Kussmaul征 D. Ewait征 E. 毛细血管搏动征 F. Duroziez征 参考答案:B, E, F
第28题: [单项选择]One benefit the author mentions is that the system______. A. uses no electricity B. has a fire-safety shutoff C. does not pollute the air in the house D. pollute the air in house 参考答案:C 答案解析:本题询问系统的优点,文中列举了5个优点,并有记号一一标出。与原文相比可知,只有C是属于优点之—的。