B

    I have a twin brother, Bob. He is taller than me. His hair is shorter than mine. Many people think we must have many things in common. But in fact this is not true. Bob is more outgoing than me. When my parents' friends come to our house, Bob often sits there and talks to them. But I often sit there and say nothing. Bob likes reading, cooking and drawing. I just like swimming and playing basketball. He has more hobbies than me, but he is not as athletic(擅长运动的) as me. Because Bob does better than me at school, my mom often says to me, “Bob is younger than you, but he can get better grades, you should learn from him.” We both like eating fast food and listening to music.

①________进取心往往和潜力是好朋友，你越是进取，能调动起来的积极性就越高，________潜力被开发出来的可能性也越大。

②人生是要经过磨练的，________在怎样的环境里都要砥砺自己，否则________不可能改变自己的人生，创造自己的价值。

③庄子讲大鹏鸟要飞到九万里高空，非要等到大风来了才行，________风力不厚，它两个翅膀________没有办法打开，就飞不起来。