If they live in Chongqing they can go to Wuhan easily.A. on footB. by the taxi C. by boa

问题补充：

If they live in Chongqing, they can go to Wuhan easily.

A. on foot

B. by the taxi

C. by boat

D. by sea

答案：

A. on foot

B. by the taxi

(答案→)C. by boat

D. by sea

解析：如果他们住在重庆，他们就能容易的乘船到达武汉。根据地理常识，长江流经重庆和武汉，故选C，乘船。