“断臂钢琴师”刘伟简介

我国提倡多大年龄的人可以无偿献血（    ）

函数y=$\sqrt{x-1}$的自变量x的取值范围是（　　)

      We can make mistakes at any age. Some mistakes we make are about money. But most mistakes are about people.
Why do we go wrong about our friends? Sometimes people hide their real meanings when they say something. And if we don't really listen, we miss the feeling behind the words. Suppose someone tells you, “You're a lucky dog.” That's being friendly. But “lucky dog”? There's a bit of envy(嫉妒) in those words. Maybe he doesn't see _it_ himself. But “lucky dog” puts you down a little. He may mean you don't deserve your luck.
      How can you tell the real meaning behind someone's words? One way is to take a good look at the person talking. Do his words fit the way he looks? Do his words agree with the tone(语调) of voice? His posture(姿态)? The look in his eyes? Stop and think. If you spend the minute thinking about the real meaning behind one's words, it may save another mistake.

请将下面文段中引用的古诗词名句补充完整。

       翻开厚重的古诗词书卷，驻足就能看见“忧国爱国”的茕茕身影，俯身便能听见“报国建功”的铿锵之音。杜甫《春望》中①“____，____”确切地传达了诗人忧国伤时的情感；辛弃疾《破阵子•为陈同甫赋壮词以寄之》中“____，____”充分表达了作者的雄心壮志；孟浩然《望洞庭湖赠张丞相》中③“____，____。坐观垂钓者，徒有羡鱼情”阐释了自己生在盛世，却闲居在家，渴望出仕报国的心境；苏轼《江城子•密州出猎》中④“____，____”描述了词人渴望为国御敌，建功立业的爱国激情。