Research has found that IQ predicted leadership skills when the tests were given under low-stress conditions, but under high-stress conditions, IQ was negatively correlated with leadership – that is, it predicted the opposite.
was=be, remains=is=be, was=be。
4.句子拆分： 主句1:Open acknowledgement of the existence of women’s oppression was too radical for the United Stated in the fifties. (公开承认对妇女压迫的存在对于50年代的美国而言有些过分激进） 主句2: and Beauvoir’s conclusion was particularly unacceptable.(而且B的结论尤其无法令人接受) 同位语从句: that change in women’s economic condition, though insufficient by itself, “remains the basic factor” in improving women’s situation.(即妇女经济状况的变化, 尽管它本身不是一个充分的因素，但“仍然是提高妇女地位的根本因素”的观点）