单项选择题

______ is a branch of mathematic scientist.

A．Statistic
B．The statistic
C．Statistics
D．The statistics
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单项选择题
All the children should be educated to be ______ to elder people.
A．respectable
B．respected
C．respecting
D．respectful
单项选择题
The last class coming to an end, the students, with meal boxes and spoons in hands, ______ towards the dining-hall.
A．entered
B．thronged
C．stamped
D．plunged
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