请回答：

Ⅰ：C、N、O、Al、Si、Cu是常见的六种元素．

（1）Si位于元素周期表第 ____周期第 ____　族．

（2）N的基态原子核外电子排布式为　 ____　；Cu的基态原子最外层有　 ____　个电子．

（3）用“＞”或“＜”填空：

Ⅱ：

（4）H₂O₂的电子式　 ____　．

（5）镁燃烧不能用CO₂灭火，用化学方程式表示其理由 ____　．

（6）在AgCl沉淀中加入KBr溶液，白色沉淀转化为淡黄色沉淀，写出反应的离子方程式 ____

（7）完成以下氧化还原反应的离子方程式：

 ____MnO₄^﹣+ ____C₂O₄^2﹣+ ____= ____Mn²⁺+ ____CO₂↑+ ____

看图，选一选，表示3时的是（    ）

根据句意和提示写出单词，完成句子.
(1)The iPhone 5 is one of the ____ (参观者). He is looking for it everywhere
(2)I'm sorry that the dog you once played a trick on ____  (攻击) you .
(3)Turn on your TV, and you can see Chairman Xi____  (接受) the interview of the reporter from CCTV now.
(4)The fourth day of the week is____  (星期三).
(5)When I passed the finishing line, my teacher cheered with____  (激动的)look.
(6)We are ____  (true)proud of our woman astronaut,Wang Yaping.
(7)Shao Yifu's great ____  (achieve) is never going to be forgotten.
(8)Peng Liyuan is a woman of great charm, she has an____  (attract) quality.
(9)About three____ (twenty) of the doctors in the hospital are women.
(10)When a strong wind came from the northwest, the heavy haze(雾霾) in Yancheng began to____  (appear).