康有为认为：要达到幸福快乐的大同之世，必须推行“公养”、“公教”、“公恤”的社会福利制度。 ……儿童6岁入“小学院”，11岁入“中学院”，16岁入“大学院”，20岁毕业。经过长达14年的义务教育培养，使每一个年轻人都受到良好的教育和专门的技术训练。材料表明他（）
①深受儒家大同思想影响　      ②注重培养国民的民主共和意识　
③主张效仿西方改善民生　      ④提倡学习西方职业教育

汽车若在起伏不平的公路上行驶时，应控制车速，以避免造成危险．如图所示为起伏不平的公路简化的模型图：设公路为若干段半径r为50m的圆弧相切连接，其中A、C为最高点，B、D为最低点，一质量为2000kg的汽车（作质点处理）行驶在公路上，（g=10m/s²）试求：

    Motto is a short statement giving a rule on how to behave , ____ can inspire us especially when we are ____ (face) with difficulties. Many of us have our mottoes, such as “Where there is a will, there is a way.” Or “Nothing is difficult if you put your heart into it.”, and so on. My motto is “God helps those who help____.” Sometimes I am lazy and don't want to make efforts ____ (work) hard, ____ the moment I think of my motto I will get energetic again and devote myself ____ what I am doing. I write my motto ____ I can see it easily. Every time I fail in my exam and begin to lose heart, the sight of my motto inspires me with much ____ (confident). My motto also makes me become ____ independent person. That is to say, I won't rely on others easily.

    My friends, what is your motto? It is really ____ (benefit) to you. So please choose one as soon as possible.