阅读理解。

    一天，一个贫穷的小男孩为了攒够学费正挨家挨户地推销商品，劳累了一天的他此时感到十分饥饿，但摸遍全身，却只有一角钱。怎么办呢？他决定向一户人家讨口饭吃。当一位美丽的年轻女子打开门的时候，他却不知所措了，他没有要饭，只乞求给口水喝。这位女子看到他很饥饿的样子，就拿了一大杯牛奶给他。男孩慢慢喝完牛奶，问道：“我应该付多少钱？”年轻女子回答道：“一分钱也不用付。妈妈教导我们，施以爱心，不图回报。”男孩说：“那么，就请接受我由衷的感谢吧！”说完男孩离开了这户人家。此时，他不仅感到自己浑身是劲儿，而且还看到上帝正朝他点头微笑，那种男子汉的豪气像山洪一样进发出来。

    其实，男孩本是打算退学的。

    多年之后，那位年轻女子得了一种罕见的重病，当地的医生对此束手无策。最后，她被转到大城市医治，由专家会诊治疗。当年的那个小男孩如今已是大名鼎鼎的霍华德·凯利医生了，他也参与了医治方案的制定。当看到病历上所写的病人住址时，一个奇怪的念头霎时划过他的脑际。他马上起身直奔病房。

    来到病房，凯利医生一眼就认出床上躺着的病人就是那位曾帮助过他的恩人。他回到自己的办公室，决心竭尽所能来治好恩人的病。从那天起，他就特别关照这个病人。经过艰辛努力，手术成功了。凯利医生要求医院把医药费通知单送到他那里，在通知单的旁边，他签了字。当医药费通知单送到这位特殊的病人手中时，她不敢看，因为她确信，治病的费用将会让她一贫如洗。最后她还是鼓起勇气，翻开了医药费通知单，旁边的那行小字引起了她的注意，她不禁轻声读了起来：

    “医药费——一满杯牛奶”

    霍华德·凯利医生

    喜悦的泪水立刻从女病人的眼中夺眶而出。

    The news of Stephen Hawking's death came a great shock to the whole world. To his family, he was “a great scientist and an extraordinary man whose work and legacy（遗赠）will 1 for many years”.

    His parents, both Oxford graduates, placed a high  2 on education and family members were often seen reading books at dinner. 3 known at school as “Einstein”, Hawking was not 4 successful academically. With time, he began to show talents for scientific subjects and decided to read  5 at university. As mathematics was not  6at Oxford then, Hawking chose physics instead.

    Diagnosed with a rare motor neurone disease, Hawking eventually 7 a wheelchair. Though shocked and bitter, Hawking continued his work in physics  8. After the loss of his  9, he communicated through a speech-generating device, which  10 him to produce A Brief History of Time with the help of an assistant.

    Hawking once  11how he felt when first informed of his disease,  12 that he would never realize his potential. “But now, 50 years later, I  13 be more satisfied with my life,” he said.

    Hawking also gained popularity  14 the academic world and appeared in several TV shows. He was featured in the film The Theory of Everything, which  15 his rise to fame and relationship with his first wife, Jane.

    Prof James Hartle, who once worked with him ,praised his unique ability to see through all the clutter（混乱）in physics and get to the  16.” My 17 of him would be…first as a scientist and, second, as a human being whose story is a victory  18 misfortune, which inspired a lot of people.” Prof Jim Al-Khalili pictured Hawking as a  19 person. “He was a fun loving guy. Inside that paralyzed body was someone full of  20 for life,” he said.