一般软化和除碱离子交换处理方式其系统设计有哪些？

阅读短文，完成表格。
The 30^th Olympic host city, London opened its arms to the world on 27^th July, 2012. It’s the capital city of the UK and one of the business centers in the world. It has a history of more than 2000 years. Many places of London were once villages. Today, London is a growing city with about 7 million people. They came from all parts of the world. Their ways of life are not the same but harmonious(和谐的). Their favourite food is pie and mashed potatoes. The symbol of London is a red double-deck bus. It came to London in 1956 and was in use there until 2005. Now it only runs on two main streets in the center of London.

London
The 小题1:__ city of the UK	The 30th Olympic host city
The history of London	小题2:____ 2000 years
The 小题3:__ of London	About 7 million
The ways of life	小题4:___ but harmonious
The 小题5:_____ of London	A red double-deck bus