找出所以复合句,再说明是社么从句,如让步从句,条件从句等等

题目

找出所以复合句,再说明是社么从句,如让步从句,条件从句等等
People often find it hard to put their feelings into words.So they keep hunting for new means of expressing their feelings other than words.Cartoons,as such a means,were thus born.Old cartoons,however,did not attract many people until cartoonists had expanded their topics by the end of the 19th century.At around the same time,comic strips came into being.
A cartoon is an amusing drawing that deals with something of interest in the news.Comic strips are a set of humorous drawings that tell a funny story.They make a story appear as a picture in the reader’s mind by showing one or two aspects of an event.
There is a cartoon that shows a father and his son.The boy is showing his father his school report,which,unfortunately,gives a very poor grade---2 out of 5.So he does it in a quite unusual way:the report is fastened to one end of a pole while the boy is holding the other and.With the long pole between them,any punishment from the father is out of

答案

Cartoons,as such a means,were thus born.Old cartoons,however,did not attract many people until（时间状语从句） cartoonists had expanded their topics by the end of the 19th century.A cartoon is an amus...