如图是化肥硝酸铵包装袋上的部分说明，在硝酸铵中____ 元素质量分数最高，硝酸铵应具有的性质是____ （写出一条即可）．

阅读下面短文，从短文后各题所给的四个选项（A、B、C和D）中，选出可以填入空白处的最佳选项。

    As the saying goes, rose given, fragrance in hand. I am always in the 1 of giving money to every beggar or homeless person I pass by. My friends say it is not good to 2. We may come across beggars or homeless people begging every day and all beggars have their ability to survive. It 3 them that I never listen.

    On a 4 day, my friend and I were walking to the 5 when I passed a beggar lady. I had seen her several times before and had always given her a few 6. That day, I gave her 2 Euros. I was waiting for the bus and reading a book when I7 to see that lady standing in front of me. She 8 me a piece of paper covered in a plastic bag to prevent it from getting 9. She stood there, looking at me 10. Putting away my book, I took the paper, which 11 she and her family had to 12 their country because of floods, and she was 13 to support them. She had got a bit of money, but she needed 5 14 Euros to get home. I 15 in my pockets and found 20 cents. My friend 16 a 5 Euro note. I asked her to give it to the lady, and said that I would 17 the next day. When she got the money, the lady hugged us and said thanks again and again, and went on her way. Later on the bus, I wondered where her home was and 18 she had gotten to this country. In her story, I felt that my friend and I would always remain part of it as the 19, who helped her get home on a rainy day. But for me, helping a stranger did bring me happiness, giving me a pleasant 20.

阅读下面一篇散文，完成后面小题。
                                                                         田埂上的精神
                                                                             张佐香
      麦子把田野的纽扣一粒一粒扣齐。但是，有一粒麦子被人们遗忘了，落在了田埂上，像一只浇了水后丢在堤上的桶。
      秋天继续深入。在清寒的晨气中，秋天的阳光抹在田野上，也抹在这一粒麦子上。它穿透土壤的黑暗，长出如针的小苗。来地里除草施肥的人们，自远方踏步而来，这一株麦苗兴奋地在微风中晃动着绿色的身子，似蝴蝶抖动金色的翅膀。然而，没有人在走近它时停下来，甚至没有闲暇望它一眼。因为田野里有大片的麦子，在等待着他们。
      本来它也应该生长在平整如砖的麦地呀！那儿有着它许许多多的兄妹，它们被调理得丰腴而肥硕。远远望去，它们宏大而又壮观。它们手挽手一起生长，一起成熟，一起走进农家的粮仓，与那些农民一起体验丰收的喜悦。田埂上只有一株孤零零的麦子，一株长错了地方的麦子。它很无奈。
      尽管这株麦子非常纤弱，但它长得非常卖力。它比田地里任何一株麦子都活得用力；它不想放弃自己生长的权利；它甚至还想用它那一片特别的绿，来引起人们的关注，从而获取生长所必需的元素。它大声地对每一位从它身边经过的人呐喊：“你们睁大眼睛瞧瞧！我不是一棵小草，我是麦子，我是一株麦子啊！”但是，没有人理会它。例外的一天，有个人偶然歇息时坐在它身边的田埂上，抽了一根烟，扔下烟蒂时瞅了它一眼，这时才突然记起来似的说：“噢，这儿还有一株麦子！”这时，麦子为有人记起它而高兴，它显得异常兴奋，甚至还有意地直了下它的身子，以便能让人看到它健康向上的样子。它不愿意让人笑话它，或者可怜它。那人只留下了些烟灰，拍了拍沾在裤子上的泥土，走了，就不再有踪影。
      这一株麦子已彻底为人们所遗忘，偶尔有小鸟落在它的身边，望着这深秋的大地一动不动。风吹，雨淋，日晒，它在孤独寂寞和无望中艰难地生长。它必须要生长，因为它是一粒落进泥土获得生命的麦子。它的存在属于大地，还有白云和高空飞翔的鸟儿，以及美好的黎明和黄昏。太阳格外地偏爱它，总是用暖暖的光芒映照着它的身子。
      尽管它是一株长在田埂上的麦子，被人们忽略，但它依然挚爱着这片土地和这片土地上的人们。它能体会到他们泥一脚水一脚跋涉于齐膝的泥淖中的滋味；它能感受到他们担着百余斤的担子压在肩上走上三四里地的分量。抢收抢种的季节，他们要在最短的时间内，顶着最毒的太阳，干着最繁重的活。他们受苦受累似乎是注定的。谁也没觉得不应该。想到此，它的身子一沉，似乎想把自己的根系伸进更深的土壤中，汲取更多的营养，使自己长得更健壮一些。
      冬去春来，它终于开始抽穗，并且呈现出金黄的颜色。当一位农人收割了无数麦子后，发现了它，欢喜得了不得，小心翼翼地割下这株麦子，把它捧在手心，喃喃地自言自语：“麦子，田埂上也能长出这么好的麦子，它承的是天惠呀！”
     一颗明亮而智慧的种子，只要根植于泥土，它就能结出果实，正如这田埂上的一株麦子。它生长的是田埂上的精神。