题目

家系图中属于常染色体隐性遗传、Y染色体遗传、X染色体显性遗传、X染色体隐性遗传的依次是    (    ) A．③①②④                                                 B．②④①③ C．①④②③                                                  D．①④③②Everything changes __________. What was not accepted in the past may be very popular with people now. A. in time B. on time C. for time　　　　 D. over time