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.
Blood tests. Blood tests are done in a doctor's office. They can pick up hCG earlier in a pregnancy than urine tests can. Blood tests can tell if you are pregnant about six to eight days after you ovulate.Doctors use two types of blood tests to check for pregnancy: 1  Quantitative blood test (or the beta hCG test) measures the exact amount of hCG in your blood.2  So it can find even tiny amounts of hCG. 3  This makes it very accurate.lood tests can tell if you are pregnant about six to eight days after you ovulate. Doctors use two types of blood tests to check for pregnancy: 1  Quantitative blood test (or the beta hCG test) measures the exact amount of hCG in your blood. 2  So it can find even tiny amounts of hCG. 3  This makes it very accurate.