The metro network is planned to be expanded up to a length of 877km with 22 lines. The annual ridership of the metro in 2012 was 2.276 billion. Beijing Subway, China. Beijing Subway, Chinaâs oldest metro system, currently ranks as the worldâs third longest subway system comprising of 17 operatinglines spanning a total length of 456km.
A papyrus described a test in which a woman who might be pregnant could urinate on wheat and barley seeds over the course of several days: Testing of this theory in 1963 found that 70 percent of the time, the urine of pregnant women did promote growth, while the urine of non-pregnant women and men did not.
Itâs possible to be pregnant and to have a pregnancy test show that you are not pregnant. The accuracy of home pregnancy test results varies from woman to woman because: 1  Each woman ovulates at a different time in her menstrual cycle. 2  The fertilized egg can implant in a womanâs uterus at different times. The amount of hCG or pregnancy hormone in your urine increases with time. 2  The earlier you take the test, the harder it is for the test to detect the hCG. 3  Most home pregnancy tests can accurately detect pregnancy after a missed period.