It is well known to us all that in China pigeons stand for peace. However in India the wh

问题补充：

It is well known to us all that in China pigeons stand for peace. However, in India the wheel in its national flag is also a of peace.

A. example

B. sign

C. mark

D. symbol

答案：

A. example

B. sign

C. mark

(答案→)D. symbol

解析：句意为: 众所周知在中国鸽子代表和平, 而在印度国旗上的车轮也是和平的象征。symbol 意思为 “象征;符号”，故D项符合题意。sign 记号；符号；标牌；征兆；mark记号；符号；标记；痕迹；example 例子；样本；范例；榜样。