□○□=□（  ）

含有硝酸锌、硝酸铁、硝酸镁、硝酸铜、硝酸银五种溶质的溶液中加入一定量的铁粉，充分反应后过滤，滤纸上一定有____ ，可能有____ 　；滤液中一定有____ ，可能有____ ；如果滤纸上有铁，则滤纸上一定同时有____ ，滤液中一定没有　____ ．

阅读下面这首宋词，完成题目。

鹧鸪天

辛弃疾

有客慨然谈功名，因追念少年时事，戏作。

壮岁旌旗拥万夫，锦襜突骑渡江初①。燕兵②夜娖③银胡鞣④，汉箭朝飞金仆姑⑤。

追往事，叹今吾，春风不染白髭须。却将万字平戎策，换得东家种树书。

①锦檐突骑渡江初：指作者率起义队伍投归南宋之事。②燕兵：即金兵。③娖：整备好，戒备森严。④银胡鞣：银色的箭囊。⑤金仆姑：箭名。

    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.