临床上“见肝之病，知肝传脾，当先实脾”的防病原则属于（）
A.未病先防
B.既病防变
C.调理阴阳
D.扶正祛邪
E.治病求本
参考答案：B
对企事业单位、社会团体以及其他组织转让旧房作为公租房房源，且增值额未超过扣除项目金额（）的，免征土地增值税。
A.10%
B.20%
C.30%
D.60%
Your company CEO just sent you an E-mail asking you to make a presentation on your project,which has been in progress for 10 months,to all identified internal and external stakeholders.He scheduled the presentation for next Monday.You expect more than 50 people to atten D.The first step in preparing the presentation is to（）
A.define the audience
B.determine the objective
C.decide on the general form of the presentation
D.plan a presentation strategy
