单项选择题

Before the telephone was ______ , man had no way of talking to each other except face to face.

A．invented
B．discovered
C．installed
D．created

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单项选择题

______ , the red-feather currency fits the most satisfactory definition of the term money .

A．As it is improbable
B．Improbable as it is
C．It is as improbable
D．As improbable it is

单项选择题

What is the writer's purpose in writing this passage（）

A．To explain how present-day reading habits developed.
B．To change people's attitudes to reading.
C．To show how reading methods have improved.
D．To encourage the growth of readin