Reason: Under the great changes of the whole social environment, family values attach importance to women's education and the improvement of women's social status. When most women have the same right to education as men, women of the same age are psychologically more mature than men as a whole, which is reflected in external phenomena such as college entrance examination scores and the ratio of male to female students. Of course, it is also related to the relatively fixed examination and selection system (high scores mean high academic qualifications).
In addition, the "Yin flourishes while Yang declines" in universities is not bad at present in China. The questioner is interested in finding out the ratio of male to female students in the United States. Compared with China, there is a serious imbalance between boys and girls in the United States.
There is too little meat for so many wolves.
6:4
Minor