-Would you like to see the movie tonight?

-      It's the last thing I want to do.[ ]

A．I'd love to．    

B．Why not?    

C．Not in the least．    

D．No problem.

标志着我国漫长的原始社会结束，奴隶社会开始的事件是               

A．炎帝和黄帝部落联合

B．大禹建立起夏朝

C．尧成为部落联盟首领

D．原始农耕的出现