古人说过“入芝兰之室，久而不闻其香，入鲍鱼之肆，久而不闻其臭。”这启示我们交友要注意（　）

如图，一次函数y=k₁x+b₁的图象l₁与y=k₂x+b₂的图象l₂交于点A，则方程组$\left\{\begin{array}{c}y=k_{1}x+b_1\\ y=k_{2}x+b_2\end{array}\right.$的解是（　　）

    Once there was a piano player in a bar (酒吧). People came just to hear him play. But one night, a lady asked him to sing a song.
  “I don't sing,” said the man.
    But the lady told the waiter, “I'm tired of listening to the piano. I want the player to sing!”
    The waiter shouted across the room, “Hey, friend! If you want to get paid, sing a song!”
    So he did. He had never sung in public before. Now he was singing for the very first time! Nobody had ever heard the song Mona Lisa sung so beautifully!
    He had talent(天赋) he was sitting on! He may have lived the rest of his life as a no-name piano player in a no-name bar. But once he found, by accident, that he could sing well, he went on working hard and became one of the best-known singers in the US. His name was Nat King Cole.
    You, too, have skills and abilities. You may not feel that your talent is great, but it may be better than you think. With hard work, most skills can be improved. Besides, you may have no success at all if you just sit on your talent.