If the wounded soldier had been given first______, he would not have died.

A．parents should be strict with their children
B．parental controls satisfy only the needs of the parents and the values of the community
C．parental restrictions vary, and are not always enforced for the benefit of the children alone
D．parents vary in their strictness towards their children according to the situation

A．cause the brain to fix memories
B．stop people remembering their experiences
C．prevent body producing certain chemicals
D．wipe out the emotional effects of memories