单项选择题

When was man's life changed in many ways

A．When he did.
B．It is not known.
C．When he learned how to make use of fire.
D．With fire.
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单项选择题
The soap industry has to work harder to attract the audience for the following reasons except that ______.
A．advertisers and faithful viewers need it
B．other TV shows are much better and going to beat the soap
C．there are various ways of enjoyment
D．the young generation don't like soaps
单项选择题
What does the writer mean by putting in fresh blood into the plot lines
A．To add violence to the story.
B．To create attractive events which make up the story.
C．To add some new words to the story.
D．To make the story look real.
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