阅读语段，回答问题。

小名

　　大约我的出生与水有关，于是颇懂得斯文的外公顺口给我起名叫淼儿。在“淼儿、淼儿”的呼唤中我慢慢长大了，到了要上学的年龄时，爸爸觉得该有个体面的学名才对，便为我取了个挺大众化的名字，可家里人还是“淼儿、淼儿”地叫。特别是妈妈叫得尤为响亮频繁。

　　不知为什么，随着年龄的增长，再听到家人唤我小名竟有些不舒服了，好像有一种不被尊重的感觉。终于有一天，我在听到妈妈又一声“淼儿”的呼唤后，郑重地对她说：“妈妈，我有大名的。别叫我小名好吗?”然后我在妈妈惊愕的表情里走进了自己的房间。

　　但妈妈终究还是改不了。

　　那天是我16岁生日聚会，好多同学都跑来了，家里的小客厅挤得满满的。我一边给大家分发糖果，一边忙不迭地说着谢谢。爸爸妈妈在厨房里忙着做菜，当一碟碟香气四溢的精美小菜端上餐桌时，同学萍将送给我的大蛋糕端了上来。我立即连声称谢着打开了蛋糕盒。我喊道：“妈妈，拿刀子来!”

　　妈妈一边递过来一把瓜刀，一边叮咛：“淼儿，小心点!”     “咦!你原来叫淼儿呀，挺好玩的名字!”

　　萍欢快地叫着，同时在空中打了一个别致的手势。朋友们也善意地哄笑起来，我的脸唰地红到了耳根。

　　晚上，临睡觉时，我推开了妈妈的房门。倚着门框，又一次对她说：“妈妈，我不是说过嘛，别叫我小名!”语气里已有了几分不耐烦。妈妈的脸上呈现出一种复杂的表情，看了走进来的爸爸一眼，叹了口气：“对不起!高翔!”可我听出我的名字在她口中却变得十分生硬，似乎很绕口。

　　没多久，我要离开家到数百里外的一座城市去读书。

　　不知怎的。妈妈竟在短短的几天内学会了很有味地叫我的大名，而且同以前叫我小名时那样顺口熟练。我自然很高兴。

　　分别的那一天，爸妈一起送我去车站，爸爸一直喋喋地叮三嘱四，妈妈则沉默着，显得有些黯然。我大人似的笑笑，反过来抚慰着他们：“放心吧，没事的，我已不是孩子了。”     火车开动的刹那，我从车窗探出头去，同他们挥手告别，一直不言不语的妈妈突然抬起了头，眼里竟有了泪。她追着，跑着，挥动双手，脱口喊了出来——

　　“写信回来。淼儿!”

　　我稍稍一愣，心里似乎被什么东西猛撞了一下，泪水夺眶而出。

    I was having a period of bad health. I had one operation after another. I was falling 1 faster than the doctors could put me back together. But I just couldn't bear the operation, the hospital stay, the long recovery and the physical therapy（康复治疗）. I told my doctor I was going to try 2 else.

    I'd discovered that walking gave me a little 3. So I started walking. The first day, my wife 4 off our steep Silver Lake hill to a flat street. She got me out of the car, and I walked about two blocks 5 asking to be taken home. The next day, I walked about four 6.

    Slowly, feeling a little 7 every day, I began to walk a mile or more. I even 8some hills to my route. I became interested in the network of public stairways around Silver Lake I made a 9 of it and walked every public staircase in Silver Lake. That went pretty well, so I 10 onto Echo Park. I was feeling better, so I kept going. The search finally 11 “Secret Stairs: A Walking Guide to the Historic Staircases of Los Angeles' a book 12 in the spring of 2010. By then, I had 13. I'd been walking at least an hour a day for three years. My life 14 returned to normal.

    In three years of walks, I've met dozens of people who'd had 15 experiences of rebirth or recovery. One man told me he'd lost 80 pounds walking the secret stairs and was dating for the first time in a decade. One woman told me she'd 16 knee operation. Another told me she'd been 17 to start ballroom dancing again.

    All I'd 18 from the walks was relief from pain. What I got was 19, community and a whole new experience of my city. Out of the car, on my feet and moving at walking pace, I 20 Los Angeles for the first time.

如图为植物组织培养的基本过程，则制作人工种子，及生产治疗烫伤、割伤的药物紫草素，应分别选用的编号是（　　）

听了这一美丽的传说,再看那好像被雅鲁藏布江冲刷出来的峡谷,让你更加不能不为这大自然的鬼斧神工叫绝。(不改变句子原意,给句子换个说法)