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 _____________.

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

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.

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

在亚马逊后台新建listing页面的时候，共有八项内容填写，其中必须填写的信息有（ ） A: A.viatl info B: B.offer C: C.variations D: D.keywords

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

Which of the following is NOT true in the studies on time-of-day influences? A: Time-of-day variations in performance vary greatly between tasks. B: Task performance varies in close association with subjective alertness. C: Variations are found in capacity for doing mental work throughout the day. D: Core body temperature minimum is associated with the worst performance.