世界上最早正式开播的电台是()
A.全国广播公司
B.莫斯科中央广播电台
C.英国广播公司
D.美国KDKA电台
参考答案:D
She appealed to the judge to _____ her husband. [ ]
A. put mercy to
B. get mercy with
C. have mercy on
D. be at mercy of
昆虫的趋光性