你能填上合适的数字组成词语吗？快来试一试。

____心一意      ____令五申     ____上八下

____死一生     ____面八方      ____神无主

    Ever since an accident put him in a wheelchair, Dan has had one dream:1.

    That is why he was 2 to learn about a piece of research that could possibly lead to his 3. But there are two 4. First, the research may take years before it becomes a treatment. And the second is the most 5 of all considerations: money.6by love for Dan, friends worked hard through a series of 7 to raise 20,000 pounds for his future surgery. Dan felt he could really start looking forward to the day when he could turn his 8 into a reality.

    Then he 9 Brecon, a 5-year-old who 10 from cerebral palsy (脑瘫). Dan read about a new surgical operation that could 11 the little boy to walk unaided. But the surgery would 12 more than 60,000 pounds --- money Brecon's parents were having a 13 time raising.

    Dan said, “I'm in pretty much the 14 condition, but it appears that Brecon can 15 walk if he gets his surgery, and I can't right now. So I thought I might as well pass the money on to him. I'm 16 to everyone who has helped me out, but this boy needs it 17 I do at the moment.”

    And so he took this dream out of the bank and 18 it over to Brecon's parents, telling them, “It would make me very happy to see the 19 made to Brecon's life.”

    “I wanted to help someone whose life could get better,” he said. “If I can help someone to walk, I will. Even if it means 20 a dream to do it.”

 已知A、B、C、D、E五种元素核电荷数依次增大，A原子核内无中子，B的一种单质是自然界中最硬的物质，C是地壳中含量最多的元素，D的最外层电子数与C的最外层电子数相同，且C、D形成的化合物之一是形成酸雨的罪魁祸首，E是地壳中含量居于第二位的金属元素，且其合金用量最多用途最广，请回答下列问题：

（1）写出A、C形成两种液态化合物的分子式　____ 、____ ．

（2）画出D的原子结构示意图　____ 　．

（3）防止E锈蚀的方法____ （答出一种即可）．

（4）B、D两种元素按质量比3：16形成化合物的分子式　____ ．

在平行四边形ABCD中，对角线AC和BC相交于点O，如果AB=8，BC=10，BO=x，那么x的取值范围是____ 

    臣密言：臣以险衅，夙遭闵凶。生孩六月，慈父见背；行年四岁，舅夺母志。祖母刘悯臣孤弱，躬亲抚养。臣少多疾病，九岁不行，零丁孤苦，至于成立。既无叔伯，终鲜兄弟，门衰祚薄，晚有儿息。外无期功强近之亲，内无应门五尺之僮，茕茕孑立，形影相吊。而刘夙婴疾病，常在床蓐，臣侍汤药，未曾废离。

    逮奉圣朝，沐浴清化。前太守臣逵察臣孝廉，后刺史臣荣举臣秀才。臣以供养无主，辞不赴命。诏书特下，拜臣郎中，寻蒙国恩，除臣洗马。猥以微贱，当侍东宫，非臣陨首所能上报。臣具以表闻，辞不就职。诏书切峻，责臣逋慢。郡县逼迫，催臣上道；州司临门，急于星火。臣欲奉诏奔驰，则刘病日笃；欲苟顺私情，则告诉不许：臣之进退，实为狼狈。

    伏惟圣朝以孝治天下，凡在故老，犹蒙矜育，况臣孤苦，特为尤甚。且臣少仕伪朝，历职郎署，本图宦达，不矜名节。今臣亡国贱俘，至微至陋，过蒙拔擢，宠命优渥，岂敢盘桓，有所希冀？但以刘日薄西山，气息奄奄，人命危浅，朝不虑夕。臣无祖母，无以至今日；祖母无臣，无以终余年。母、孙二人，更相为命，是以区区不能废远。

    臣密今年四十有四，祖母刘今年九十有六，是臣尽节于陛下之日长，报养刘之日短也。乌鸟私情，愿乞终养。臣之辛苦，非独蜀之人士及二州牧伯所见明知，皇天后土，实所共鉴。愿陛下矜悯愚诚，听臣微志，庶刘侥幸，保卒余年。臣生当陨首，死当结草。臣不胜犬马怖惧之情，谨拜表以闻。