A: Have you learned Topic 2, Unit4?  

B: No, not yet. We will begin to learn it next week.

A: But we've learned it. It's about some ____ like Edison, a great American inventor.

B: I have read about Edison in a book, so I know ____ about him.

A: Really?

B: Yes. He invented a lot of things. And they all have ____ the world.

A: I know he was born in 1847, and died in 1931.

B: So he has been ____ for more than eighty years.

A: Yes, but we can remember him every day.

B: Sorry, I don't understand ____ you mean.

A: Do you give your friend a call every day?

B: Yes. Oh, I see. Edison invented the telephone.

读下面两幅非洲地图回答相应问题。

写同偏旁的字，并组词

女： 好 、  好友  、  好人  、____

走：____、____、____、____

水：____、____、____、____

请回答下列有关商鞅变化的问题：
（1）商鞅变法的哪些措施有利于经济的发展？
（2）为了更好地推行变法法令，人们都在流传着商鞅将任命一名能干的县令并派他到远离国都的地区。这件事可信吗？为什么？
（3）结合所学知识，说说这场变法有何意义。
（4）商鞅变法是成功了，还是失败了？请说说你的观点和理由。