在多数情况下，网络接口卡实现的功能处于网络层协议。()

A. prove the accuracy of Yale"s study
B. introduce the theory mentioned below
C. demonstrate the importance of eating fruits
D. claim children are fascinated about X-ray

A. the phenomenon of shyness is incurable
B. the shyness is not something a child can easily control
C. the shyness is a brain defect that may require outside help
D. the shyness is a normal part of all children to some extent or another

A. there is weak evidence linking the two
B. there are many uninhibited temperaments that do not develop social phobia
C. the reactions in the brain are substantially different
D. temperaments are part of human diversity, not abnormalities