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依次填入下列各句横线处的成语，最恰当的一组是（   ）

①屠呦呦在获得诺贝尔奖后，对记者谈了自己的感想。他感谢他的团队成员多年来对自己的       ，不离不弃。

②全社会的人都在为实现中华民族的伟大复兴而努力工作，我们学生刻苦学习，也是为成就“中国梦”      。

③数码产品         的现象早已屡见不鲜，网购平台上售卖仿冒名品手机的卖家也越来越多，有关部门有必要展开一轮彻查严打的行动了。

如图所示，一重为8N的球固定在AB杆的上端，今用测力计水平拉球，使杆发生弯曲，此时测力计的示数为6N，则AB杆对球作用力的大小为（   ）