小球从某高度由静止下落过程中速度逐渐增大，在这个过程中，能描述重力对该球做功大小与时间关系正确的图线是（  ）

从所给的四个选项中选出最佳答案，将其序号填入题前括号内。

    A young man 1 himself in Japan with only enough money to buy the ticket for his 2 back home. As he knew that it would take him only two days to 3 home, he decided that he could easily spend the time 4food. So he bought a ticket and 5 the ship. The man 6his ears to the sound of the lunch bell. When dinner 7 came, he didn't go to the dining room, 8 that he was not feeling well. The next morning he still didn't have breakfast and at lunch time he again 9 in his room. But at dinner time he was so hungry that he went to the dining room and 10 everything the waiter put in front of him. “Bring me the bill,” he said. “The bill, sir?” said the waiter in surprise. “There isn't any bill. On our ship meals are included in the money for the ticket.”

       党的十八大以来，以***同志为核心的党中央将卫生与健康摆在保障和改善民生、加强社会建设的重要位置予以部署推进。党的十八届三中全会从经济社会发展全局出发，对继续深化医改作出了全面部署，明确提出要建立更加公平可持续的社会保障制度，深化医疗卫生体制改革。在此精神的指引下，健康中国建设得到极大推进。2015年10月，健康中国建设正式写入党的十八届五中全会公报。2016年10月，国务院颁布《“健康中国2030”规划纲要》，为推进健康中国建设，提高人民健康水平作出了战略部署。

结合材料，运用政治生活的知识，说明在推进健康中国建设中党如何发挥领导作用的。

下列计算正确的是         （     ）