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这是一套记述我国著名科学家的成长以及他们艰辛的科研历程的纪实文学作品。这些大科学家走过了近一个世纪的人生历程。他们生在战乱年代,山河破碎、民生凋敝,骨肉同胞饱受欺凌;他们忍辱负重、负笈海外、卧薪尝胆、发奋自强;他们学业有成、毅然归国、隐姓埋名、白手起家、自力更生、科学拓荒,为国家造“争气弹”。以“两弹一星”为标志,他们在国防和高科技领域中取得了重大突破,打破大国封锁与孤立,使新生的共和国政权站稳了脚跟。世纪人生,百年追梦,爱国奉献,砥砺创新,科技强国,这是大科学家们一生的真实写照。这些共和国的功臣,他们都是顶天立地的中国人,是值得历史记住的科学英模。气象:新式气象站播报
奇异的黑色雪,1897年11月9日,在俄国彼得堡下了一次有趣的黑雪。这些黑雪的黏附物不是杀虫剂,也不是煤烟,而是像小蚂蚁一样的小昆虫。亿万个黑色的小昆虫站在雪花上,与雪花一起飘落下来,好像撒了煤粉似的黑乎乎的一片。人在雪地里踩一个脚印,不久脚印里便会聚集更多的小昆虫,脚印变得更黑了。Winterkill
Emmeline knows she's not supposed to explore the woods outside her settlement. The enemy that wiped out half her people lurks there, attacking at night and keeping them isolated in an unfamiliar land with merciless winters. Living with the shame of her grandmother's insubordination, Emmeline has learned to keep her head down and her quick tongue wkkk.net the settlement leader asks for her hand in marriage, it's an opportunity for Emmeline to wash the family slate clean—even if she has eyes for another. But before she's forced into an impossible decision, her dreams urge her into the woods, where she uncovers a path she can't help but follow. The trail leads to a secret that someone in the village will kill to protect. Her grandmother followed the same path and paid the price. If Emmeline isn't careful, she will be next.