材料一：在《发展与环境》一书中有这样一句话：“你可以不卷入战争，你可以不从事生产，但你不能不关心环境，除非你拒绝生存。”

材料二：有关环境问题的两幅漫画。

       就地取材             小鸟的悲哀

刀的刃部一般比较薄，刀刃对木块产生的力F可分解为如图所示的两个相同的分力F₁，F₂，下列说法正确的是（   ）

晋朝人张翥，少年时就显示出才华，但是，他不在读书上下功夫，也不知道约束自己，踢球不知收场，摆弄乐器没有节制。他父亲很担忧，怕他长大了不务正业，而他自己却没认识到这样玩闹下去前途不堪设想。这说明人最难战胜的敌人就是自己，人的弱点包括 （）
①自己的惰性；   ②自己的缺点和错误；
③自己的不良习惯；④自己能够控制和约束自己 

    My name is Lucy and this is my grandfather. His name is Tim and he is my best friend. My grandfather is 64 years old and he is retired now, so he has much time to be and play with me. I love him very much and I know he loves me too.

    He lives with me, my father, my mother and my brother Kevin. We live in a big house. My grandfather is a very tall and strong man! Can you see me on his shoulders (肩膀)in this picture? He is really strong! My grandfather always knows what I want to do or to eat or what I feel inside! When I am sad, he makes me laugh with his funny faces. Every night before I go to bed, my grandfather tells me stories, and he even sings for me!

根据材料内容选择最佳答案。