I really love football. I' m a member (成员) of our school football team (队) and I play four times a week. I also like swimming and I go swimming after school. I don't like basketball.

                                                                        Jack

    My favourite sport is basketball. I also like table tennis, but I don't play it at school. I go to a club (俱乐部) with my friends. I' m not very good at football.

                                                                        Anna

    Bicycle riding (骑自行车) is my fav0urite sport. I go to school by bicycle. I also like travelling (旅游) by bicycle and I-do it with my father. It's very interesting. I don't like football or" basketball.

                                                                     David

    I like football. It's really interesting. My two brothers are in our school football team and they help me. I don't like playing it with my friends.
                                                                    John.

“它结束了春秋战国以来诸侯国长期割据争战的局面，将中国历史推进到到一个崭新的阶段．”这里的“它”与哪个朝代有关（　　）

如图1所示是电阻R₁与滑动变阻器R的电路图，电源电压为12V，电阻R₁的I﹣U图象如图2所示．开关闭合后，滑动变阻器R接入电路的阻值为40Ω时，求：

    当前，我国农村经济发展相对落后，制约着国家经济的发展。对此，我国决定实施乡村振兴战略，引起社会广泛关注。

    M市在乡村振兴发展过程中，支持有条件的乡村以农民合作社为主要载体，创办集循环农业、创意农业、农事体验于一体的田园综合体，并为农户提供产前、产中、产后“一条龙”服务。引导社会资本参与投资特色养殖业和兴办企业，鼓励农民八股经营，通过“公司+合作社+农户”的模式帮助农民致富，稳定农村土地承包关系，完善土地所有权、承包权、经营权分置办法，依法推进土地经营权有序流转。运用市场机制将城市产业发展要素引向农村，解决乡村振兴面临的资金、技术等要素紧缺难题。

将点A（2，1）向右平移2个单位长度得到点A′，则点A′的坐标是（    ）