胭脂红是一种水溶性的大分子食用色素．在观察细胞质壁分离及复原实验中，可用高浓度的胭脂红溶液作为外界溶液，观察无色洋葱鳞片叶表皮细胞的变化．下列有关叙述正确的是（　　）

解决好人口问题，是全面深化改革的重要一环，关系到国家的可持续发展。“单独二胎”政策是计划生育政策的完善。阅读材料，回答问题。

材料一：我国人口年龄结构的基本状况图

材料二：第六次人口普查数据显示：每10万人中具有大学文化程度8930人，高中文化程度14032人。文盲率4.08%，流动人口增长81.03%。我国人口素质依然不高，流动人口在增加……要解决我国人口问题，需要提高人口素质

材料三：十八届三中全会审议通过的《中共中央关于全面深化改革若干重大问题的决定》指出，坚持计划生育的基本国策，启动实施一方是独生子女的夫妇可生育两个孩子的政策，逐步调整完善生育政策，促进人口长期均衡发展。

（1）观察图1，说说我国出台“单独二胎”政策的客观依据。

（2）结合材料二，运用人口的相关知识，谈谈你对解决我国人口问题的措施的认识。

（3）联系材料三，从人口对资源、环境、发展的影响角度，分析中央改革人口政策的正确性。　​

    出身于音乐世家而如今成为美国证券界风云人物的苏珊说：“如果重新选择，我会毫不犹豫地选择音乐，但我知道那只是美好的‘假如’，我只能把手头的工作做好。”自小喜欢建筑艺术的荆青说：“我因为放弃了不喜欢的公务员职位，才在十年中设计出了今天大家看到的近千个独一无二的楼房样板间。”歌手王杰说：“我做过茶楼伙计、油漆工、的士司机……我喜欢并感恩做过的每一份工作。”

    这三个人，你更欣赏谁？请综合材料内容及含意作文，体现你的思考、权衡和选择。要求选好角度，明确立意，明确文体，自拟标题，不要套作，不得抄袭。

      According to scientists' research, the month in which babies are born could affect them in some ways.
       Babies born in spring get sick easily. Children born under Aquarius may be less clever than those born in other seasons. They may also have shorter lives than those born in autumn  Scientists believe many of the differences can be explained by the mother's exposure to sunlight in pregnancy(怀孕).  Sunlight helps lead to the production of Vitamin D in the body. The lack of this in the first months of life may have a bad effect on mental and physical health.
         Vitamin D, called the "sunshine vitamin", is known to help regulate（调节） thousands of genes during development, according to a study of more than two million people. So Vitamin D has a good effect on health  This study showed that people born from April to June had slightly shorter lives than those born in October, November or December. Similar studies in the USA showed that people born in autumn lived about 160 days longer than those born in spring.
        Professor Russell Foster, an Oxford University neuroscientist on seasonal biology, said the conclusions were surprising and interesting. He added, "These are small effects but they are very, very clear. I am not giving voice to star signs and they are just for fun. But it is true that we are affected by our season of birth."