for thousands of years, people have accepted challenges in different fields. there are not only physical challenges, but also social and intellectual challenges. some people risk their lives in playing sports to see how well they can do. others try to make and invent something to make life easier. they all enjoy challenges.
why do people enjoy these challenges? there are probably many reasons. one is curiosity. the other is the personal feeling of success, of achievement, and nowadays, for some people, it is a business.
today, we still have many challengers before us. medical science faces the challenges of conquering many diseases which still attack human beings. engineers and planners must build new cities, design and produce new kinds of transportation. scientists must develop new forms of energy. in short, we live in an age of challenges.
- 推荐阅读：
- 小组挑战赛作文400字
- 人需要挑战作文
- 挑战黑暗的小学作文300字
- 挑战三大才女作文范文
- 生存挑战作文600字
- 挑战赛作文600字
- 读《钢铁是怎样炼成的》有感作文600字
- 读《钢铁是怎样炼成的》有感作文800字
- 读《钢铁是怎样练成的》有感作文
艺考用户说说
友善是交流的起点