已知一个多边形的内角和是外角和的2倍，此多边形是______边形．

Mary doesn't remember when and where she        this skirt.   [ ]

A. buy

B. have bought

C. will buy

D. bought

治疗该病可选用的方剂是（）

A.银翘散

B.巴戟散

C.牡蛎散

D.四君子汤

E.六味地黄汤

白细胞减少症刺激骨髓粒细胞生成疗效肯定的是

A．维生素B4

B．鲨肝醇

C．利血生

D．脱氧核糖核酸

E．碳酸锂

Fred is a member of Glad Ltd, a small publishing company, holding 100 of its 500 shares, the other 400 shares are held by four other members.It has recently become apparent that Fred has set up a rival business to Glad Ltd and the other members have decided that he should be expelled from the company.To that end they propose to alter the articles of association to include a new power to ‘require any member to transfer their shares for fair value to the other members upon the passing of a resolution so to do’.Required:Advise the parties concerned whether or not the proposed change to the articles is legally enforceable and whether or not it can be used to force Fred to sell his shares. (10 marks)

沟通上、下腔静脉的静脉是（）

A.头静脉

B.奇静脉

C.肋间后静脉

D.副半奇静脉

E.膈下静脉