单项选择题

The key to introducing computers to classroom teaching is through

A．teacher training
B．curriculum design
C．software development
D．hardware purchase
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单项选择题
Leo Yam thinks that ______ should be the first concern for teachers before worrying about new technology.
A．operating low-tech facilities in teaching
B．learning how to use computers effectively
C．being looked down upon by superiors and parents
D．the possibility of being replaced by computers
单项选择题
When Americans say Thank you , they ______.
A．are lying
B．mean nothing
C．are demanding help
D．show politeness
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