Writing Practice:NeuTech is developing Freechat, an instant messaging tool running on mobile terminals. Susan Thompson, the leader of Software Engineering, has broken down the workflow with her team, and completed the detailed design. She is writing an email to the client Katherine Parker with an attachment of the detailed design, and asking her to reply with her opinions.提示：NeuTech公司受甲方委托，正在开发一款运行于移动终端的即时通讯软件FreeChat。软件设计完成后，团队负责人Susan Thompson，写邮件给客户Katherine Parker，将软件设计方案以附件的形式发给她，并请求她给出她的意见和建议。