第二卷(非选择题)

第三部分　写　　作 (满分30分)

第一节　单词拼写 (每小题1分)

根据所给汉语注释，写出所缺单词的正确形式(每空限写一词)。

⒈ She works very hard, and she is a great _________(安慰) to her parents.

⒉ It’s ______________ (不必要的) for you to have a talk with her.

⒊ _____________ (雷雨) is common in summer.

⒋ The girl enjoys singing and dancing, and she is _______ (敏锐) at music.

⒌ He is the __________ (冠军) of the boys’ 200-meter race at the sports meet.

⒍ He likes playing the piano a lot and wants to be a ______ (钢琴家) in the future.

⒎ The boss is ____________ (乐观的) about his factory.

⒏ Did you get seasick during the __________ (航海)?

⒐ Please _______ (加热) the milk until it boils.

⒑ Wool is one of the chief _________ (出口物) of Australia.

（14分）已知蓝铜矿的主要成分是2CuCO₃·Cu(OH)₂，受热易分解。铝土矿的主要成分是Al₂O₃、Fe₂O₃、SiO₂。已知NaAlO₂+CO₂+H₂O=Al(OH)₃↓+NaHCO₃，根据下列框图转化回答问题：

(1) 写出②的离子方程式：______________________、_____________________。

(2) 沉淀a、c化学成分分别是：　___   ___、__    ____。　　

(3)请写出检验沉淀b中所含有阳离子的实验方法_______________________________

(4)洗涤沉淀c的实验操作方法是____________________________________________

加热沉淀c应放在___________容器中进行。

(5) 经过④、⑤步反应得到铜和金属铝，写出反应的化学方程式：______________________、_________  ___________________________________。