百年前，梁启超先生曾在《少年中国说》中指出：少年智则国智，少年富则国富，少年强则国强，少年进步则国进步，少年雄于地球则国

For my youth China
the hundred years ago,a Chinese youth the clear and resonant voice said in the world between:” rises for China studies,goes on an expedition the north and south,works hard,risks one's life,a generation founds a country finally premier,stands erect together with brand-new China East the world.hundred year later today,our China youths should also be clear.Prosperous studies for China,is responsibility of youth of shoulder the my new century China,faithful promise.

C

1.our dating with the moonlight and fulfil our 100 years' faith.
2.Don't leave me for long and I would wait for you back with the wind.

百年前 我国黄土高原 有大片的森林 后来由于掠夺式的开发等原因 茂密森灵变成了荒山秃岭 这种现象说明C生物的生存能影响环境,改变环境
A环境条件决定人口数量 B环境条件决定生物的形态 C生物的生存能影响环境,改变环境 D生物适应环境
适者生存,生物必须适应环境才能生存；生物也能影响环境如蚯蚓改良土壤,千里之堤毁于蚁穴,植物的蒸腾作用可以增加空气湿度等．黄土高原有茂密的森林,后来由于人口过于集中和长期掠夺式的开发等原因,变成了荒山秃岭,表明人（生物）对环境（黄土高原）的影响．
故选：C．

字面翻译就是：到尘世中去游历一番后,看尽繁华与衰败,众生的苦与乐,就像百年前一样未变.山上寺庙里有悬钟,每天撞钟,心如止水,也从未改变.