I was born in 1979. How to calculate the scientific method of giving birth to boys and girls?

1, morning urine pH value, morphological distinction between men and women, and its inaccuracy.

2, stretch marks judge men and women, and it is not allowed.

3, the Qing dynasty watch, and it is not allowed. (If accurate, how many little gege can the Qing Dynasty have? )

4. It is also not allowed for the Chinese to count men and women.

5, Down's results look at men and women, accurate. (but only if you look at two data at the same time, not just the hcg ratio, and you haven't had an abortion injection in the first trimester. )

6, fetal movement to see men and women, turn over, kick, bulge, etc. And it is not allowed.

7, the shape of the fetal sac depends on men and women, accurate. (the premise is the data of B-ultrasound fetal sac within 40-50 days of early pregnancy. )

8, nipple on both sides, areola color, size to see men and women, not allowed.

9, pregnancy line see men and women, what is left and right, or straight line, navel line, etc. , is not allowed, and it is not allowed.

10, vertical line method, hanging needle and thread method, looking at men and women: extremely inaccurate.

1 1, pregnancy reaction depends on men and women. Not allowed.

12, the maximum increase of chorionic gonadotropin value in early pregnancy varies between men and women, which is accurate.

13, mother becomes ugly and beautiful, depending on men and women, not allowed.

14, belly-shaped, pointed, round, big or small, depending on men and women, are not allowed.

15, looking at the arms of men and women up and down, the accuracy rate is 60%. (60% of boys are pregnant)

16, the ratio of biparietal diameter to head and hip length in the later period. Not allowed.

17, fetal heart rate depends on male and female, male 140, female 150, not allowed.

18, 70% accuracy of pulse diagnosis in traditional Chinese medicine (provided that long-term pulse diagnosis in men and women, experienced old Chinese medicine practitioners, will have 70% accuracy).

19, body color turns black, male and female: 20th. Whether the navel protrudes is not allowed for men and women.

2 1, it is not allowed to be born before the expected date of birth or to meet men and women after the expected date of birth.

22, B-ultrasound shows that the baby's face is facing the male and the female, which is extremely inaccurate.

23, fetal movement to the left male, to the right female. This is extremely inaccurate. 24. A man whose mother's nose gets bigger, and a woman who stays the same. This is extremely inaccurate.

25. It is women whose breasts develop rapidly after pregnancy; On the contrary, it is a man. The accuracy rate is 70%

26, urine for men, on the contrary, women are not allowed. 27, press the thumb, the left hand will quickly return to blood, and the right hand will be female; not allow

28. The left strong pulse is male and the right strong pulse is female. This is not allowed.

29. Fetal movement is early for males (before 16W) and late for females. Not allowed.

30. The anterior wall of placenta is male and the posterior wall is female; Not allowed. To sum up, only three items are accurate, and the others are not allowed. In fact, even early B-ultrasound won't show men and women.

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