某同学沿周长为400m的环形跑道跑了一圈又回到出发点，他的路程和位移的大小分别是（   ）

⑴Let me help you .____                           A、No , I can't .

⑵Are we all here today ?____                  B、No , thanks .

⑶Is that bag light ?____                           C、No , he isn't here .

⑷What day is it today ?____                    D、Certainly .

⑸Is it heavy ?____                                    E、No , it is heavy .

⑹Who's on duty today ?____                  F、I am .

⑺Can you carry it ?____                          G、Yes , it is .

⑻Could you help me , please ?____       H、OK .

⑼Thanks a lot .____                                 I、You're welcome .

⑽Let's put the books in the box .____    J、It's Tuesday .

已知i是虚数单位，则复数$z=1+2i+3i^2$所对应的点落在(    )

不使用欧元的国家是（   ）