阅读下面短文，从每题所给的A、B、C和D四个选项中，选出最佳选项。

D

    University graduates Mallorie Brodie and Lauren Hasegawa, who invented a smartphone app that tracks construction defects for commercial builders, had a tiger by the tail.

    Bridgit, which they founded in 2012, launched a cloud-based communications platform that helped manage defects on construction sites, which can delay projects and result in costly repairs if left unchecked. The smartphone application lets site supervisors take photos of cracks or damaged paint, share them with employees and track the problems to solution.

    More than 600 subcontractors used the pilot version in many building sites before the commercial version, called Closeout, officially launched.

    Feedback(反馈)was so good that they began to wonder: Why limit their invention to a specific industry? Why not turn it into some kind of a handy tool for consumers too? This became their dilemma. In other words, should they stay the course or look for wider applications of their app?

    The experts polled all agreed Bridgit should stay focused on its original goal. Ms. Hasegawa and Ms. Brodie took that advice.

    As more business customers signed on, it became clear that they made the right decision. Since then, the company's growth has been rapid.

    Earlier this year, Bridgit launched Closeout ,which is designed so that even the least tech-savvy can use it easily. Today, the app is being used on sites across Canada and the United States and even by top general contractors.

    In October, Bridgit was named to the Canadian Innovation Exchange's top 20 list of Canada's most innovative (创新的) companies working in digital media and information and communication technology .

    But Ms. Hasegawa and Ms. Brodie are not resting on their glories. They have also been collecting feedback on Closeout from customers, and they'll launch a new version in the spring. It will target not only general contractors but developers and building owners, too.

小勇是八年级的一名学生，他经常不吃早饭就去上学，上课经常开小差，不专心听讲，作业不会做时常向同学请教，作业多时还经常抄同学的作业。做作业时，喜欢趴在桌上，转动手中的笔，还喜欢塞上耳机听歌曲。老师多次找他谈心，但变化不大。
阅读材料，请回答：

全班同学结合这个表格，对二战后美国经济发展的情况的特点和原因进行了分组讨论，结果如下：

A组：经济发展弊端显露；受到经济危机严重打击

B纽：改革社会经济；加大发展教育科技事业的力度，促进以信息产业为代表的高新技术的发展；完成传统产业的技术改造
C组：美国是世界上最富强的国家，占据了广阔的国际市场；大力发展科技教育，发展新兴工业和军事工业；改善人民生活，创造经济发展环境

D组：通货膨胀，债务沉重

    韦曜字弘嗣，吴郡云阳人也。少好学，能属文，从丞相掾，迁太子中庶子。时蔡颖亦在东宫，性好博弈，太子和以为无益，命曜论之。和废后，为黄门侍郎。孙亮即位，为太史令，撰《吴书》孙休践阼，为博士祭酒。命曜依刘向故事，校定众书。又欲延曜侍讲，而左将军张布近习宠幸，事行多玷，惮曜侍讲儒士，又性精确，惧以古今警戒休意，固争不可。休深恨布，然曜竟止不入。孙皓即位，为侍中，常领左国史。时所在承指数言瑞应。皓以问曜，曜答曰：“此人家筐箧中物耳。”又皓欲为父和作纪，曜执以和不登帝位，宜名为传。如是者非一，渐见责怒。皓每飨宴，无不竟日，坐席无能否率以七升为限，虽不悉入口，皆浇灌取尽。又于酒后使侍臣难折公卿，以嘲弄侵克、发摘私短以为欢。时有衍过，或误犯皓讳，辄见收缚，至于诛戮。曜以为外相毁伤，内长尤恨，使不济济，非佳事也，故但示难问经义言论而已。皓以为不承用诏命，意不忠尽，遂积前后嫌忿，收曜付狱，是岁凤凰二年也。曜因狱吏上辞曰：“囚昔见古历注所纪载多虚无，在书籍者亦复错谬。因寻控传记考合异同采摭耳目所及以作洞纪事尚未成又见刘熙所作释名时有得失而爵位之事又有非是又作官职训及辩释名各一卷欲表上之，乞垂哀省。”曜冀以此求免，而皓更怪其书之垢，故又以诘曜。而华核连上疏救曜，皓不许，遂诛曜，徒其家零陵。

（节选自《三国志·吴书》）