①滴加HNO₃溶液  ②过滤  ③滴加AgNO₃溶液  ④滴加Ba（NO₃）₂溶液．

根据短文理解，从A、B、C、D四个选项中选择最佳答案填空。

    My mother only had one eye. And because of this, I n ever wished her to show up in my school, being afraid that my classmates would   1 I had an ugly mother.

    One day during elementary school, I was terribly ill. My mother came.

  “Your mom only has one eye?!” asked some of my classmates. I was so 2.

    I wished my mother would just 3 from this world. “If you make me teased(嘲笑), why don't you just die?” I shouted at her, taking no notice of the sad look on her face. My mother just handed me some medicine and left without saying 4.

    At that time, I felt 5 to say what I always wanted to say, and I didn't think I had hurt her feelings very much. That nigh t I saw my mom 6 in her room, so quietly, as if she was afraid that she might 7 me. Even so, I hated her tears from one eye. I made a   8: I must study hard and leave my mother.

    Years later my dream came true. I was quite successful and lived 9. I never thought of going back to see my “ugly” mother   10 one day I got a letter, which said, “My son… I'm sorry I only have one eye. When you were little, you got into a(n) 11 and lost your eye. As a mom, I couldn't 12 watching you live with only one eye. 13 I gave you mine. I was never  14 with you and I never regretted(后悔) what I did be cause I 15 you……”

    I cried out aloud. Only then did I realize how beautiful my mother was!

天方夜谭，比喻虚诞离奇的议论，与无稽之谈同义，但是这一词的来源却是文学价值极高的《天方夜谭》。“夜谭”释为故事，“天方”指地名，即(   )

依次填入下列各句横线处的词语，最恰当的一组是（     ）
（1）鲁侍萍这个人物也是有生活          的，反映了那个时代下层妇女的悲剧。
（2）直到她说到呜咽，她们也就          流下那停在眼角上的眼泪。
（3）在学习《苏轼词两首》时，老师说：“你们一定要           ，可不要开小差，否则难以体会到苏轼的情怀。”