指标设计的步骤和方法。

（16分）铝土矿的主要成分为Al₂O₃。生产铵明矾[NH₄Al(SO₄)₂·12H₂O]和Z（其水溶液可用于伤口消毒）的工艺流程图如下：

（1）反应Ⅰ的主要离子方程式是__________________________                      。

（2）已知反应Ⅱ中会生成氢氧化铝沉淀，则加入过量的X为_________（填化学式）。

（3）“电解”时，用惰性材料作电极，则阴极反应可表示为    _________     。

（4）流程中可以循环使用的物质是     。

（5）反应Ⅵ的化学方程式为       __________            ，其中的还原剂是____________。

（6）已知铵明矾的许多用途和明矾类似，请说明铵明矾的净水原理_________________________ 。

       一位美国记者说：“周恩来并不打算改变任何一个坚持 * * 立场的领导人态度，但是他改变了会议的航向。”周恩来出席的这次会议是 [ ]

A．德黑兰会议

B．日内瓦会议

C．万隆会议

D．开罗会议

对客户实行分类管理，对于重点关注客户和异地客户开户应坚持（）。

A.远程核实

B.电话核实

C.邮件核实

D.上门核实

以下哪几个是音箱品牌（）

A.Microlab麦兰

B.Edifer漫步者

C.Creative创新

D.轻骑兵

World Water Shortage

A new study warns that about thirty percent of the world’s people may not have enough water by the year 2025.
A private American organization called (1) Action International did the new study. It says (2) than three-hundred-thirty-five-million people (3) enough water now. The people live in twenty-eight (4) . Most of the countries are in Africa or the (5) East.
P-A-I researcher Robert Engelman says (6) the year 2025, about three-thousand-million people (7) lack water. At least 18 more countries are (8) to have severe water problems. The demand (9) water keeps increasing. Yet the amount of water on Earth (10) the same.
Mr. Engelman says the population in countries that lack water is (11) faster than in other parts of the world. He says (12) growth in these countries will continue to (13) .
The report says lack of water in the future may (14) in several problems. It may increase health (15) . Lack of water often means drinking (16) not safe. Mr. Engelman says there are problems (17) over the world because of diseases, such as cholera, (18) are carried in water. Lack of water may also result (19) more international conflict. Countries may have to (20) for water in the future. Some countries now get sixty percent of their fresh water from other countries. This is true of Egypt, the Netherlands, Cambodia, Syria, Sudan, and Iraq. And the report says lack of water would affect the ability of developing to improve their economies. This is because new industries often need a large amount of water when they are beginning.