A.

    The great success of Tu Youyou, the first Chinese woman national to win a Nobel prize in science, has made Chinese full of happiness and hopes on the future of traditional Chinese medicine (TCM). Tu was born in 1930.

    She discovered(发现) Artemisinin(青篙素), a medicine that is greatly useful for patients(病人) suffering from malaria(疟疾病). "Artemisinin is a gift for the world people from the traditional Chinese medicine. It is important to cure(治愈) malaria and other diseases and help the health of the world people," Tu said in Beijing. "The prize winning is an honor(荣誉) for China's science and traditional Chinese medicine in their course of reaching out to the world."

    In 2011, Tu became the first scientist on the mainland to win America's Lasker Award because of discovering Artemisinin.

    On China's Sina Weibo, hearing the breaking news, at least tens of thousands of users discussed and gave a lot of "thumb-ups." One of them called "Shengxiaxohuiyi" wrote, "Now I feel truly proud of being a medical student."

材料：宋朝“尽削方镇兵权，只用文吏守土，及将天下营兵，纵横交互，移换屯驻，不使常在一处”。由此形成了维持百余年的禁军更戍法。军士即使不远戍他乡，每月请粮时营在城西的军士要到城东粮仓支领，营在城东的军士也要到城西粮仓支领，并不许雇车或人帮助，以培养他们吃苦耐劳的精神。更戍法的基本内容是：禁军除殿前司捧日、天武两军外，其余各军“皆番戍诸路，有事即以征讨”。禁军出戍的方式有三种，一是因粮食不足而移屯者，允许携带家属，称为就粮。二是因军事或政治方面的原因而移屯者，隶属于各州，不携带家属被称为屯驻。三是同样因为军事或政治原因移屯，不携帶家属，隶部署司者，称为驻泊。更戍法的实行，“元戎（主将）不知将校之能否，将校不知三军之勇怯，各不相管辖，以谦谨自任，未闻赏一效用，戮一叛命者”，这就难怪宋军在与辽军作战时屡屡败北了。

——摘编自张希清《宋朝典章制度》

如图，B岛在A岛的南偏西${40}^0$方向，C岛在A岛的南偏东${15}^0$方向，C岛在B岛的北偏东方向，从C岛看A，B两岛的视角$\angle ACB$是(     )

2015年6月14日,韩国新增7例中东呼吸综合征(MERS)病例，确诊患者增至145人。中国响应世界卫生组织的呼吁，派出医护人员参与疫情防控。这说明（  ）

①中国积极参与符合联合国宪章精神的各项工作

②国际组织在国际社会中始终发挥着积极作用

③中国与韩国具有完全相同的国家利益

④我国在国际社会中是负责任的国家