A．Human brains differ considerably.B．The brain a person is born with is important in determining his intelligence.C．An environmentally handicapped person won’t attain his due level of intelligence.D．Environment is important in determining a person’s intelligence.
A．Human brains differ considerably.
B．The brain a person is born with is important in determining his intelligence.
C．An environmentally handicapped person won’t attain his due level of intelligence.
D．Environment is important in determining a person’s intelligence.