[解析]
(1)A.细节理解题.根据第二段中的第一句"During the first two weeks of its life warmth is perhaps the most important psychological(心理的)thing…"可知,出生后的前两周里,幼猴心理上最需要的是温暖.
(2)D.细节理解题.第三段中的第一句"Why is cloth preferable to bare wire?"是本段的主题句.整个段落解释了"为什么出生两周后的猴子更喜欢布妈妈".根据第三段的第二句"Something that the Harlows called contact(接触)comfort seems to be the answer…"可知,布妈妈接触起来更舒适.
(3)D.推理判断题.根据最后一段If its cloth mother is now introduced into the playroom,the baby rushes to it and holds onto it for dear life.After a few minutes of contact comfort,it obviously begins to feel more secure.的叙述可知,当幼猴看到布妈妈后,它会觉得有安全感,从而在行为上会放松,从而越来越喜欢玩玩具,而减少与"母亲"接触的时间.
(4)B.主旨大意题.通读文章可知,本文旨在告诉读者实验中关于幼猴对妈妈依赖的发现