【单选题】Which of the following best expresses the essential information in the highlighted sentence? Incorrect answer choices change the meaning in important ways or leave out essential information.
A.
Most luxuries and comforts were important and could improve the quality of people's lives.
B.
Most luxuries and comforts were not so important because they couldn't improve the quality of people's lives.
C.
Most luxuries and comforts were not necessary and also they pred the progress of human beings.
D.
Most luxuries and comforts were so costly that people could not afford them.
【单选题】下列关于社会基本医疗保障制度和商业健康保险, 说法正确的是( )。 ① 商业保险需要社会基本医疗保障体系的补充和完善 ② 社会基本医疗保障体系的建立和完善能够促进商业健康保险的发展 ③ 商业健康保险的发展需要不断提高经营管理水平 ④ 保险机构参与各种基本医疗保障经办管理业务, 可以有效提高风险管理水平, 改善基本医疗服务质量