单项选择题

According to the recent research, ______.

A．parents should save more money for children's college education
B．the brain can develop until the adult age
C．babies turns angry when not given enough toys
D．too many toys may affect a child's development

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单项选择题

According to Rob Reiner, the year from zero to three is ______.

A．a critical stage to develop human nerves
B．extremely important for a person's development
C．studied carefully for government to make policies
D．worth more efforts in education than that in later years