下图是某种遗传病的系谱(基因A对a是一对等位基因).请分析回答
若Ⅱ7不携带该病的基因,则该遗传病的遗传方式为()
参考答案:X染色体隐性遗传
There was a terrible noise _____ the sudden burst of light. [ ]
A. following
B. to be followed
C. followed
D. being followed
当列调电台自动开关机时,应该怎样判断故障?