下列物质中不能被消化道直接吸收的是（　　）

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①在煤中加入适从的石灰石作脱硫剂，可以减少____型酸雨的发生．脱硫后产生的废料中含有的____（填化学式）可用于制造建筑材料．

②天然水中的杂质较多，常需加入明矾、氯化铁、漂白粉等处理后才能作为生活用水，氯化铁净水原理的离子方程式为____．漂白粉能杀菌消毒，其有效成分是____（填化学式）．

③某工业废水中含有的铊（Tl⁺）具有高毒性，处理时常加入NaClO溶液，将 T1⁺转化为Tl³⁺，该反应中氧化剂是____（填“Tl⁺”或“NaClO”），同时加入适量氨水以调节水体的pH，从而将Tl³⁺转化为难溶的____（填化学式）沉淀除去．

A: Hello,Lily. ____?

B: I' m going to have a party for my 14th birthday this weekend.

A: Oh, that's wonderful! ____?

B: I will have it at home. ____? I'll be happy if you can come.

A: Sure, I'd love to. And I'll bring some cakes made by my mom. She's good at baking (烘焙), you know.

B: Thanks.

A: ____ ?

B: It will start at 10 o'clock on Saturday morning. After that, how about going to the park?

A: ____! We can fly a kite there.

B: OK. See you then.