What do we know about mother-reared rhesus monkeys?
A. They only stay with their peers until the age of six months.
B. They are not easily frightened by strange people and events.
C. Their brain and body chemistry may be remarkably changed.
D. They abuse or ignore their offspring when becoming mothers.
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It can be inferred from Paragraphs 1 and 2 that______.
A. human beings can control the environment
B. we are actually not a unique species as we thought of
C. research on monkeys provides enlightenment to humans
D. monkeys are usually reared without love and mother care