46 （单项选择题）         

A.Thompson was shocked and devastated.

B.Another trial was held.

C.I cannot begin to imagine what would have happened had my mistaken identification occurred in a capital case.

D.During the attack, she made an effort to memorize every detail of his face , looking for scars , tattoos (纹身) or other identifying marks.Jennifer

E.Many criminals are sent to prison on the basis of accurate testimony by eyewitnesses.

F.Jennifer Thompson decided to meet Cotton and apologize to him personally.

（共10分）请按要求回答下列问题：

（1）硅在无机非金属材料中一直扮演着重要角色，被誉为无机非金属材料的主角。

①下列物品用到硅单质的是                              ；

A．玻璃制品

B．石英钟表

C．计算机芯片

D．光导纤维 E．太阳能电池②硅酸盐组成复杂，往往用氧化物的形式表示，某硅酸盐其主要化学成分为Ca₂Mg₅Si₈O₂₂(OH)₂. 把它写成氧化物的形式为：                             ；

（2）Cl₂和SO₂都具有漂白性，但将这两种气体按体积比1:1通入水中得到的溶液却几乎没有漂白性，写出Cl₂和SO₂ 1:1通入水中发生的离子反应方程式：______________________________________________________；

（3）写出二氧化硫与双氧水反应的化学方程式，并标出电子转移方向和数目： ______________________                  。