单项选择题

A．Because it costs less.
B．Because teachers will learn quickly.
C．Because it is required by experts.
D．Because the cultural patterns are divers
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单项选择题
A．world civilizationB．language developmentC．physics and chemistryD．literature
A．world civilization
B．language development
C．physics and chemistry
D．literature
单项选择题
A．teachers are discovering for themselves what children and parents needB．there is someone telling teachers how to teach and what to learnC．teachers are from better backgroundD．students and parents go to school together
A．teachers are discovering for themselves what children and parents need
B．there is someone telling teachers how to teach and what to learn
C．teachers are from better background
D．students and parents go to school together
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