A．Human brains differ considerably.B．The brain a person is born with is important in determining his intelligence.C．Environment is crucial in determining a person’s intelligence.D．An environmentally handicapped person will never attain the level of intelligence of which he is capable
A．Human brains differ considerably.
B．The brain a person is born with is important in determining his intelligence.
C．Environment is crucial in determining a person’s intelligence.
D．An environmentally handicapped person will never attain the level of intelligence of which he is capable