—_________ weather it is! We can't go boating on the Xuanwu Lake. 

—Don't worry. Let's go to the Science Museum instead.

    Long ago,there was a mother and a son living in a house.She worked hard every day,____they were always poor.

    One day,her son stole his friend's bag.“Mom,what do you think of this bag?”His mother praised her son instead of scolding him.The next time,he stole____overcoat.She praised him again.A few years____(late),he grew up to be a young man.He stole jewelry and brought them to his mother.This time,she did not scold her son.Then,he started____ (steal) more expensive things.

    One day,the police caught him.Before he____(put) in prison,he begged the police to meet his mother.They took him____his mother.As soon as he saw his mother,he suddenly bit her ear.“Ouch!What is the matter with you?”She finally scolded him.Her son answered.“If you had given me a scolding like that when I stole the first bag,I could not ____a thief.”____ (look) at her son heading to prison,“If only I____turn back time,I would scold him severely.”She said____(regret).

现有浓度各为1mol•L^﹣1的FeCl₃、FeCl₂、CuCl₂混合溶液100mL，加入一定量的铁粉，对下列各情况填空（已知：氧化性Fe³⁺＞Cu²⁺＞Fe²⁺）．

（1）反应完毕，铁粉有剩余．反应后的溶液中一定含　____ 　阳离子．

（2）反应完毕，有铜生成，铁粉无剩余．反应后的溶液中一定含____ 阳离子，该阳离子在溶液中物质的量的范围是　____ ；反应后的溶液中可能含　____ 阳离子．

（3）反应完毕后，无固体沉积物存在，反应后的溶液中一定含____ 　和____  阳离子．

阅读材料，回答问题．

青藏高原有一种叫蝙蝠蛾的昆虫和一种虫草菌．在蛾幼虫冬眠时，虫草菌的孢子会随风飘到幼虫体表，并钻入 幼虫体内，吸收幼虫体内的营养而快速繁殖．菌丝在虫体内经过几个月的慢慢成长，充满虫体，幼虫只剩外骨骼，就是“冬虫”．隔年夏季，菌丝体会从死亡虫体的 头部长出，像草一般，称为“夏草”．这就是冬虫夏草的名字的来源．