现在，随着我国社会主要矛盾转化为人民日益增长的美好生活需要和（）的发展之间的矛盾。

单项选择题Before the 20th century, clinical decision-making was very difficult. With the development of natural science and new technology as well as the accumulation of knowledge, the clinical decision-making process has become simple. A、正确 B、错误

单项选择题随着人民群众的生活水平不断提高，保护生态环境、建设（）中国应该而且必须成为发展的题中之义。