阅读漫画，要满足人民群众“幸福指数”的要求，最根本的是（   ）

选出正确答语。

① Where is my bag?____                            a. I'm from Canada.

②Is your pencil box on the chair?____       b. OK!

③What's this?____                                  c. It's in your desk.

④Where are you from?____                       d. No, it isn't.

⑤Let's go to school.____                         e. It's a toy bear.

第一次世界大战之所以被定性为一场帝国主义战争，是因为这场战争（　　）