Usually do not work hard, the key time can only rely on luck, bad luck had to recognize the plant, otherwise there is no other way.

at this time, Huang Xiaoxiang had no choice but to sit on the chair and look at the incomprehensible comprehension, turning his eyes straight. Biology can still do one or two, but physics and chemistry can only follow the famous formula of poor life in the legend; "two long and two short choose C, three long and one short choose short, three short and one long choose long." plus the sixth feeling that we can't get along with ourselves to make a random choice....