31. Where is the Three Gorges Dam being built? A. the Huang He
B. in Yokohama
C. on the chang Jiang
D. in fengdu​

The option C

C. Chang jiang

Explanation:

The Three Gorges Dam is being built on the Chang Jiang in China. The dam will,in part, help to control flooding along the great river, the third longest in the world after the Nile and the Amazon. But the dam is also expecting power and to allow ships to sail farther into China.

i think the answer is a and i hope this ; ))