idea:
不同意
男生和女生思维特点不同
选科上的差异
举例说明有些难可做女不能做
同意
男女平等，无论男生还是女生都应该享有平等的选择专业的机会。
男女搭配做事不累(这是开玩笑的话,哈哈)就是效率高

范文：
Nowhere in the world has the issue of female¹ rights and interests been so much debated as in our society. Nowadays, plenty of universities limit the number of female students who study in some of subjects; therefore, many people think universities should accept equal numbers of men and female study in every subject, but others have a negative attitude. As far as I am concerned, I think men and women should gain equal educational opportunities, but accepting equal numbers of male and female, in every subject, is unnecessary and impossible. Therefore, I disagree with the view that universities should accept equal numbers of male and female students in every subject. My argument in support of my view is as follows.

The main reason is that mode² of thinking is different between female and male. Everyone, male and female, has equal right to study in universities, nevertheless, due to difference of in thought and views. Men and Women may represent varied³ study capability⁴. A case in point is that men may possess more talent than women in mathematics, physics and like stuff⁵. In the study of language, on the other hand, female shows stronger ability than male. In the history of human beings, most scientists, especially those who research abstract⁶ theories, are male.

Another reason is that nature decides different directions of development between men and women. Today, although female’s right is being increased, female still plays a different social role. Women are by nature good at housekeeping since the biological function of a woman is first to bring children into the world and then to bring them up and it has been proved by some scientists that women are not good at business management, political administration⁷, etc. So, in the study of business and management, requiring equal numbers of male and female is not essential.

From what has been discussed above, we may draw the conclusion that accepting equal numbers of male and female students in every subject is impossible and I also disagree with this point of view.