单项选择题


A．accident
B．incidence
C．incident
D．accidental
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单项选择题
A．inB．atC．onD．with
A．in
B．at
C．on
D．with
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
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