公安队伍正规化建设，坚持执法为民、立警为公。 ( )
参考答案：对
解析：公安队伍正规化建设，要坚持从严治警、依法治警，坚决克服消极腐败现象。
He began to work there ______________. [ ]
A. on his fifty
B. at ages of fifty
C. when he fifty
D. in his fifties
伊斯兰教是什么时间传入新疆的？
