单项选择题

The telephone has intensified conflicts among people because______.

A．it increases the danger of war'
B．it provides services to both the good and the malicious
C．it makes distant communication easier'
D．it breaks up the multi-generational household

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单项选择题

What is the main idea of the passage

A．The telephone has helped to save people from illness and fire.
B．The telephone has helped to prevent wars and conflicts.
C．The telephone has made the modern oily neither better nor worse .
[D) The telephone has had positive as well as negative effects on US.

单项选择题

21 In order to get the fall benefits of automation, labor will depend mostly on

A．additional payment to the permanently dismissed workers
B．the increase of wages in proportion to the increase in productivity
C．shorter working hours and more leisure time
D．strong drive for planning new installations