1978年7月25日,世界上第一位“试管婴儿”在英国诞生,这项技术被称为医学史上的一大奇迹,开创了生殖医学领域的新纪元。2010年10月4日,被誉为“试管婴儿之父”的英国科学家罗伯特·爱德华兹获得诺贝尔生理学或医学奖。这告诉我们（  ）

①人既是价值的创造者,又是价值的享受者　②对一个人价值的评价主要看他的贡献　③获得社会的认可是人生价值实现的重要标志　④要在个人奋斗中证明自己的价值

    Four days ago, I was taking a taxi. On the way, I just had the 1 stop at a store to buy something. A woman2me to let her hitchhike(免费搭车).

    I 3and picked this woman up. I thought she was too fat; she 4 about 120 kg. But she was very sweet and kind-hearted, so I didn't5.

    She was talking to me6 while going back to her place about how she got everything for her7. So I thought to myself she must have a happy family. But nothing special 8 yet.

    I got to her apartment9she needed help getting all the things she got to her place. I just helped her out and while I was 10the stuff(物品) inside her house, I11 that her husband walked in from the back of the apartment. So she was talking to him in her12 voice.“Honey, I got you this ; Honey, I got you that.” But what I came to notice was that her husband was13. And then I looked close to how they were together and I knew for that moment I was seeing “ TRUE14.”

    They cared for each other so 15 and what they looked like was not 16 at all. I was just deeply 17 by the true love between them.

    Sometimes I think about going back to the apartment to tell them what I 18 in them and to thank them for sharing their 19with me. Even though it is for a few 20 I like the way the blind couple care about each other; it is a very happy and romantic thing.

青海玉树地震、四川雅安地震，使我们中国人更加团结，当时水源遭到严重污染，自然界中的水本来就含有各种杂质，因此灾区中的水也就含有更多的杂质了，污染水可以用不同的方法进行净化．下面是刘星同学设计的净水方法：

上图所示 是用空饮料瓶、带导管的单孔胶塞、蓬松棉、纱布、活性炭、小卵石、石英沙等材料自制的一个简易净水器．①根据上述净化材料的特性，B层最好放置____；其中小卵石、石英沙的作用是____；如果将石英沙与小卵石的位置颠倒是否可以，为什么?____．②该净水器不同位置的纱布所起的主要作用不同，其中第二层纱布的作用是：____．③你认为上述简易净水器（填“可以”或“不可以”）____将硬水变成软水．

科技小组计划选一块600平方米的实验田．（从左往右填表）

____ 

仔细观察这个表格，你发现了什么？

我发现____ ．