单项选择题

Influenza (travels) exactly as (fastly) as man. In oxcart days (its) progress was (slow).

A．travels
B．fastly
C．its
D．slow
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单项选择题
（56）处应填写（）

A．rich
B．wealth
C．happy
D．poor
单项选择题
The book (that) you (see) (laying) on the table (belongs) to the teacher.
A．that
B．see
C．laying
D．belongs
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