According to the passage, i1 has long been believed that ______.
A.people in poor countries scarcely know how to enjoy a high standard of living
B.the world's resources being limited, the people in underdeveloped countries are bound to live a poor life
C.most Americans know that the world's resources of many kinds are becoming scarce
D.it is impossible for all the people in the world to improve their living standards
为了保护您的账号安全,请在“上学吧”公众号进行验证,点击“官网服务”-“账号验证”后输入验证码“”完成验证,验证成功后方可继续查看答案!