下列各组物质，均属于硅酸盐工业产品的是（ ）。

阅读下面短文，从短文后各题所给的四个选项(A、B、C和D)中，选出一个最佳选项。   
    “Daddy, can I have a piece of cake？” my oldest son asked me.
We had just been to the gym and stopped to eat at the restaurant.
    “No，” I replied, “you don't need a piece of cake.”
My son 1 15 in a few days. He 2  over 6 feet tall. He is very slim and athletic in shape . It was not always that way. My wife wrote a book about the challenge and   3   of getting him fit. He now takes it  4  and looks as if he's never been overweight in his life.
    He had a full plate of vegetables and tofu.  He didn't need a piece of cake.  5 ， everything in the restaurant is quite  6 . Our dinners could have  7 a family of seven at a fast food restaurant. That cake probably  8 $5.
    He was silent as he looked at the delicious cakes. I had forgotten that I had walked over to the cake shelf while he was   9 his food from the buffet (自助餐)．
    I looked at my plate. There sitting on the edge was a piece of 10. I looked at it wondering but also knowing how it got there. “We will divide it，” I said.
    A few days later my oldest son was  11me again. We stopped at a   12  . He ordered a sandwich. I then13 two sandwiches. He immediately barked, “Can I have two？” He wanted 14what Daddy had.
    Your kids are very   15 to put on their trays, exactly what you have on yours, and I think this applies to (适用于) more than food. Keep your life plate with only what you want your kids to have.

2010年10月9日，国家发改委价格司公布《关于居民生活用电实行阶梯电价的指导意见》，向社会公开征求意见。《意见》一公布，仅搜狐网站的网民不同意见就超过了2.1万条。这是：（  ）

新中国成立后，中央人民政府系统共有副部长以上干部500名，其中非共产党员人士约1/3以上，而在中央人民政府副主席、委员、政务院副总理、委员，及一些部委中，非共产党员人士占到1/2或1/2以上。这个高级领导干部的阵容（    ）

如图所示烧杯中均盛有海水，铁在其中被腐蚀时由快到慢的顺序是