遵守规则是尊重社会的底线，也是法治社会的基本要求。尊重自然是人类的责任和义务。尊重自然的核心是 。
保护环境
—Have you heard of _______ death of Nelson Mandela?
—Yes. It is indeed _______ loss to the world.
A．the; a
B．a; the
C．the; /
D．a; /
念唱音乐
