What are the three major variations of the External Narrator?

There really exist many types or varieties of the same language. Some language variations result from the ______________, that is, his or her __________ (dialect), or his or her _____________ (sociolect). However, some language variations result from the _____________.

A number of __________ and __________ variations in intensity, tone and pitch height can alter simple statements and questions.

While researchers are pursuing a number of nanotechnology treatments, they are all variations on a theme: targeted cancer killing.

The most well-known genre of Uighur music is the___________, which is characterized by variations and continuity of musical patterns.

The following are all variations of idioms, except ______. A: replacement B: addition C: shortening D: repetition

Being sensitive to cultural variations when making initial business relationships will make a positive impression.（ ）

. The ______ care of the body requires an understanding of its needs, allowing for variations resulting from climate, age or occupation.

The notion of a language is not __________ and there really exist many types or__________ of the same language. Some language variations result from the language user, that is , his or her geographical origin (__________), or his or her social condition (__________). However, some language variations result from the circumstances of communication, such as __________ and Ligua Franca , __________ and __________ as well as__________.

当图像偏蓝时，使用“变化”（Variations）菜单命令应当给图像增加何种颜色？