阅读下面的材料，根据要求写一篇不少于800字的文章。

    有个青年人总是抱怨环境，一位长者对他说：“你想保护自己的脚，穿上一双鞋子比给全世界铺上地毯更容易做到。”

读了以上材料，你有怎样的联想和感悟？

    要求：①自拟题目；②选准角度，自定立意；③除诗歌外，文体不限；④文体特征鲜明。

用矮杆晚熟（ddEE）水稻和高杆早熟（DDee） 水稻杂交，这两对遗传因子自由组合．如果希望达到2000株矮杆早熟纯种水稻，那么F₂在理论上要有（　　）

Swimmers Wanted
Can you swim? Do you like kids? Can you help them with swimming on weekends? Come and join us. Call Jane at 330-8976 for more information(信息).
Chess Club
Do you like to play chess? Mr Chen can teach you. You can come here every Friday afternoon.
Tel: 623-1940
Add: Room 102 in School’s P.E. Building
Let's Learn French
Can you speak French? Do you want to learn French? Join the French club now.
Time: 9:00 am—11:30 am(from Monday to Friday)
Call Henry at 543-1248.
Musicians Wanted
Boys and girls, are you music lovers? Can you sing or dance? Can you play any instruments(乐器)? Welcome to our Star Rock Band.
Please call Victor at 891-3453 or send an email to music@yahoo.com.
根据以上内容，选择最佳答案。