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)

Lambert-Eaton综合征肌无力的原因是由于（）

A.体内产生AchR自身抗体，使AchR受损或减少

B.使乙酰胆碱酯酶活力受到强力抑制导致Ach作用过度延长

C.使Ach合成和释放减少

D.阻碍钙离子进入神经末梢

E.阻碍Ach与AchR结合