“____”于2008年9月25日21时10分发射升空，于28日17时13分成功返回地面。

    班里举办名著阅读成果展示活动，请你热心帮助大家解决下列问题。

    It is interesting to visit another country, but there are some problems when we don't know the 1very well.It may be 2 to talk with the people there. We may not know how to use the telephone in the country that we are visiting. We may not know how to buy 3 we need. In a4country we might not know where to eat or what to order in a 5 It is not easy to decide how6to tip (给……小费) waiters or taxi drivers. When we need help, we might not know how to ask for help.It is not pleasant to have an experience7that. 8a short time, however, we learn what to do and what to 9We learn to enjoy life in another country and then we may feel 10 because we have to leave.

某人第一次向南走40km,第二次向北走30km,第三次向北走40km,那么最后相当于这人(     )