阅读材料，完成下列要求。

    科技是国之利器，国家赖之以强，企业赖之以赢，人民生活赖之以好。

材料一：一个地方、一个企业，要突破发展瓶颈、解决深层次矛盾和问题，根本出路在于科技创新。要加快构建以企业为主体、产学研相结合的技术创新体系，以市场为导向扰动技术创新，用同样的资源生产质优、价廉、适销的商品。加强创新人才队伍建设，努力实现优势领域、关键技术的重大突破。促进实体经济创新，推动中国制造向中国创造转变、中国速度向中国质量转变、中国产品向中国品牌转变。

材料二：党的十八大以来，***同志高度重视科技创新，围绕实施创新驱动发展战略提出一系列新思想。2015年5月17日上午，中共厦门产业技术研究院委员会、中共厦门产业技术研究院纪律检查委员会成立。2015年来开展了以"党员先锋岗"为载体的"一个党员一面旗"岗位科技创新当能手活动”。努力发挥党建优势，构建了面向厦门区域的科技创新全链条。

已知圆内接正三角形的边心距为2cm，求它的边长．

﹣1﹣2的结果是（   ）

    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.