Dialogue:

W: Are there any long rivers in Africa?

M: Yes, for example, the River Nile is the longest fiver in the world.

W: Is it Egypt? I hear that it used to flood large areas. What about it today?

M: In order to control the flood and make electricity, people built the Aswan High Dam on the river.

W: Then it is another interesting place, isn't it?

Question: Why did Egyptians build Aswan High Dam? 

- In order to sail upstream.

- In order to control the flood.

- In order to attract visitors.


In order to control the flood.