One of the reasons why men invented certain sound

One of the reasons why men invented certain sounds to express thoughts and actions was that________.

A．they could agree upon certain signs

B．they could write them down

C．they could communicate with each other

D．they could combine them

此题为多项选择题。请帮忙给出正确答案和分析，谢谢！

您可能感兴趣的试题

A dogs ______ to its owner is one of the reasons why that animal is a favorite household p

答案解析
One of the reasons why some people are not in favor of fairy tales is that______.A．they ar

答案解析
One reason why the woman of today may take a job is that she______.THE GREATEST RECENT SOC

答案解析
One of the reasons why business or government has

答案解析
One of the reasons why the California Earthquake

答案解析
One reason why the duration of a portfolio of bonds does not properly reflect that por

答案解析
One reason why the duration of a portfolio of bonds does not properly reflect that por

答案解析