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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.

A.They
B.
B.They
C.
C.Their
D.
D.They
E.


【参考答案】

B
细节题。对于两种不同环境(母亲亲自养育和没有母亲养育)下长大的恒河猴的对比,主要在第三、四两段中有所论述。根据第三段最后一句话,没有母亲养育的恒河猴对陌生人和不熟悉的环境都更容易感到害怕,据此可以反推出,有母亲养育的猴子不易在陌生的人和环境面前受到惊吓,故[B]为。根据第三段第二句,[A......

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