51.  As is known, there are only two sexes in the world, men and women.

52.  In one word, people are created equal regardless of their sex.

53.  These two ideas have reasonable thought composition, but also involve one-sided sex.

54.  First and foremost, different sexes give them dissimilar appearances.

55.  While the mother determines in large part what qualities attract us in a mate, it's the father-the first male in our lives-who influences how we relate to the opposite sex.

56.  In my point of view, on one hand , since we have known that boys and girls have difference in communicative ways, we can avoid misunderstandings and improve our relationships with the opposite sex.

57.  Above all, we can see sex make a striking difference in people's personality and behavior .

58.  As a result, we can easily judge the sex of a person by its looking.

59.  Only in this way, can we avoid conflicts between the two sexes.

60.  Men and women differ a lot in many ways because of the sex distinction.