如图1所示，将一个正四棱锥（底面为正方形，四条测棱相等）的其中四条边剪开，得到图2，则被剪开的四条边有可能是（　　）

 

动物界中种类最多、数量最大、分布最广的动物类群是（    ）

从方框中选择最佳选项完成对话，有两项多余。

A. Who is the main character in it?

B. It's a good action film.

C. It was fantastic.

D. What kind of film is it?

E. What do you think of it?

F. Where and when shall we meet?

G. You'll have a chance next time.

A: Hi, Daming. Did you go to the concert last night?

B: Yes, I went there with my parents.

A: ____

B: Very wonderful. Some famous singers like Zhu Zhiwen and Li Yuchun sang songs at the concert.

A: What a pity! I didn't go there because I had to look after my sister at home.

B: ____ By the way, would you like to see a film with me tonight?

A: Yes, I'd love to. ____

B: It's an action film.

A: Great! I like action films. What's the name of it?

B: Chinese Zodiac(《十二生肖》). It is my favourite action film.

A: ____

B: Jackie Chan. Maybe this is his last action film.

A: ____

B: What about 7:00 at Hongxing Cinema? The film begins at 7:20.

A: OK, see you then.

B: Bye.

2009年9月2日召开的国务院常务会议，决定在公共卫生与基层医疗卫生事业单位和其他事业单位进行收入分配制度改革，实施绩效工资。事业单位工作人员工资收入由基本工资、绩效工资和津贴补贴三部分构成，其中绩效工资是收入分配中活的部分，主要体现工作人员的实绩和贡献。对事业单位实施绩效工资 ①是对我国现行分配制度的根本性变革   ②体现了按劳分配原则 ③把劳动者付出的劳动数量和质量与个人收入直接联系在一起，有利于激发劳动者的劳动积极性  ④实现了按劳分配与按生产要素分配的分离

西楚霸王项羽认为自己力能举鼎，有万夫不挡之勇，不听文臣武将的劝谏，结果是四面楚歌，垓下大败，乌江自刎。项羽的失败告诉我们（   ）