2015年度感动中国人物吴锦泉，如今年过八旬，仅靠磨刀为生，生活并不富裕，老两口还住在三间破旧的瓦房里，但他关心社会，为村里修桥补路，去福利院看望孤儿，将自己的辛苦钱毫无保留地捐献出来。吴锦泉的事迹告诉我们
A．承担责任必然会使自己的利益受到严重损失
B．身份不同，责任不同
C．应弘扬以团结友爱为核心的民族精神
D．人生的意义不在于索取，而在于奉献
1. We can say a lot of things about those( )(毕生致力于诗歌的人): they are passionate, impulsive, and unique.
2. Mary couldn’t have received my letter, ( )(否则她上周就该回信了).
3. Nancy is supposed to ( )(做完化学实验) at least two weeks ago.
4. Never once ( )(老两口互相争吵) since they were married 40 years ago.
5. ( )(一个国家未来的繁荣在很大程度上有赖于) the quality of education of its people.