“谬论听得多了就能变成令人信服的真理,而且会僵化人们的头脑。” 　　__歌德“多相口服避孕药符合生理特点,比单相避孕药好;宫内节育器可引起盆腔感染及输卵管不孕症,所以未生育的妇女不应使用宫内节育器;使用口服避孕药的妇女每隔几年需要停用一段时间,让身体休息 “Fallacies hear more and become convincing truths and can rigidify people’s minds.” __ Goethe "The multi-phase oral contraceptives are physiologically unique and better than single-phase contraceptives; an IUD can cause Pelvic infection and tubal infertility, so women who have not given birth should not use IUD; women who use oral contraceptives need to be disabled for a period of time every few years to allow the body to rest