ways that can easily be replicatedx Elsewhere, I saw yet another women’s group slowly expanding their local agricultural production, with UN helpx Soon they will replace World Food Program rice with their own home-grown produce, sufficient to cover the needs of their school feeding programx These are home-grown, grass-roots solutions for grass-roots problems - precisely the kind of solutions that Africa needsx Topic 1 For a decade, metallurgists studying the hulk of the Titanic have argued that the storied ocean liner went down 2uickly after hitting an iceberg because the ship's builder used substandard rivets that popped their heads and let tons of icy seawater rush inx More than 1,500 people diedx Now a team of scientists has moved into deeper waters, uncovering evidence in the builder\'s own archives of a deadly mix of great ambition and use of low-2uality iron that doomed the ship, which sank 96 years ago Tuesdayx The scientists found that the ship's builder, Harland and Wolff, in Belfast, struggled for years to obtain ade2uate supplies of rivets and riveters to build the world's three biggest ships at once: the Titanic and two sisters, Olympic and Britannicx Each re2uired three million rivets, and shortages peaked during Titanic\'s constructionx "The board was in crisis mode," said Jennifer Hooper McCarty, a member of the team that studied thepany\'s archive and other evidencex "It was constant stressx Every meeting it was, \'There\'s problems with the rivets, and we need to hire more peoplex" The team collected other clues from 48 Titanic rivets, using modern tests,puter simulations,parisons to century-old metals and careful documentation of what engineers and shipbuilders of the era considered state of the artx The scientists say the troubles began when the colossal plans forced Harland and Wolff to reach beyond its usual suppliers of rivet iron and include smaller es, as disclosed inpany and British government papersx Small es tended to have less skill and experiencex Adding to the threat, thepany, in buying iron for Titanic\'s rivets, ordered Nox 3 bar, known as "best," not Nox 4, known as "best-best," the scientists foundx They also discovered that shipbuilders of the day typically used Nox 4 iron for anchors, chains and rivetsx So the liner, whose name was meant to be synonymous with opulence, in at least one instance relied on cheap materialsx The scientists argue that better rivets would have probably kept the Titanic afloat long enough for rescuers to have arrived before the icy plunge, saving hundreds of livesx C-E Translation Compulsory Translation “神州制造”模式遭遇成长瓶颈,这种模式必须要改进和提高一些外国人以为,“神州制造”约莫就是质量低下的代表名称的词不可否定,少数产品的确存在质量问题,让大大都价廉质优的产品代其遭罪 质量是产品的最根本因素跟着外国市场的夸大,神州企业也意识到质量的重要性因此一场旨在提高质量,提供优良服务的运动正在兴起 在传统的制造业中,神州企业通过技术创新和质量办理,为国际市场提供高质量的产品在最近兴起的信息产业,神州企业以高科学技术为师,增强和外国企业的交流与合作,提高产品位量 近几年来,神州政府通过立法和社会监视保证产品位量,创造全社会重视产品问题的情况 Topic 1 1996年,一名取景师在新疆喀纳斯自然掩护区无心间拍到一只白熊自此往后的十年里,白熊藏身于深山之中,再无音信直到2003年,许多人才再次在该自然区又发了然白熊的踪迹 在熊的家族里,只有北极熊是白的色彩的但是,这个庞然大物是如何离开极地寒带,来到这个寒温带的处所呢?难道它是通过通往北极的水路来至此地?这一猜测遭到动物学家的质疑首先,北极熊不能在温带的树木草丛中糊口其次, 2006年,一个科学考察队在白熊出没的地区发了然熊冬眠的冬窝儿,还发了然一小团白的色彩的动物毛发DNA样本判定为棕熊的毛发但是,也可能,至少那团毛发不属于相片中的白熊 Topic 2 蓝藻是一种简单的水生植物,它可以在河湖、湿地、树干和温泉自然蔓延生长当蓝藻细胞达到一定程度时,蓝藻的“密集孽生”会使水体变色、引起泡沫、散发臭气、影响贝类和鱼类的生存,还会使水质大幅度下降 2007年炎天,富 |