“祸起萧墙”、“望洋兴叹”、“日薄西山”三个成语依次出自( )A．《季氏将伐颛臾》

现有一串数字80021，从镜子中看到这串数字是______．

The statutory documents of a company, QU Limited, provide for two classes of shares, with each class of shareholders having the right to appoint up to two directors on the board of directors. The class A shareholders hold a majority of the issued shares and are to resolve that the rights of the class B shareholders be modified and shall only have the right to appoint one director.Required:Explain whether the holders of the class A shares can unilaterally resolve to vary the rights attached to the class B shares. (10 marks)

门诊音叉试验最常用的音叉频率是()

A．128Hz和256Hz

B．256Hz和512Hz

C．512Hz和1024Hz

D．512Hz和2048Hz

E．256Hz和2048Hz

已知二叉树BT的后序遍历序列是dabec，中序遍历序列是debac，它的前序遍历序列是 ______。

A．cedba

B．acbed

C．decab

D．deabc

“条例”是在什么时候进行了修正？