下列能反映出人口疏密的是（    ）

2016年2月14日，国务院公布的《关于加强农村留守儿童关爱保护工作的意见》提出，加强农村留守儿童关爱保护工作，特别是依法享有受教育权的保护，维护未成年人合法权益，是各级政府的重要职责，也是家庭和全社会的共同职责．对此理解，说法错误的是（　）

①此举主要体现了对农村留守儿童的家庭保护        ②国家对农村留守儿童的健康成长实施特殊保护

③受教育权只是农村留守儿童的基本权利                ④青少年要珍惜受教育权利，自觉履行受教育义务

      A poor woodcutter and his wife lived in the forest in a small hut.   1 was so small that there was space only for him and his wife to sleep.
      One cold night, somebody knocked 2 the door. The woodcutter asked his wife  3the door and let the stranger in. She said, “ But there is no space.” The man laughed 4 said, “ Two can sleep well, three can sit.” And then the woman opened the door. The stranger5 to come in, and they all sat telling stories to each other.
     Then came 6 knock. The woodcutter told the stranger, “Friend, open the door.” And the man said, “But there is no space.” The woodcutter said, “If three persons can sit comfortably, four persons can sit a little7 than before.”
The stranger opened the door, and a man entered. Suddenly, a strange knock 8 did not seem to be human's! The woodcutter said, “Open the door. I know who 9.  It is my donkey.”
    Everyone said, “  10is the donkey going to stand?” The man said, “Right now we are sitting, when the donkey comes in, we will all stand.”

阅读下列材料：

材料一：汉兴，海内为一，开关梁，弛山泽之禁，……蜀卓氏之先，赵人也，用铁冶富。……富至僮千人，田池射猎之乐，拟於人君。……（鲁）曹邴氏……以铁冶起，富至巨万。……邹、鲁以其故多去文学而趋利者，以曹邴氏也。

——司马迁《史记·货殖列传》

材料二：匈奴背叛不臣，数为寇暴于边鄙，……先帝（汉武帝）哀边人之久患，苦为虏所系获也，故修障塞，饬烽燧，屯戍以备之。边用度不足，故兴盐、铁，……以佐助边费。

——桓宽《盐铁论·本议》

材料三：现在汉武帝再不让商人们擅自经营了，把其所有权收回，让政府派官吏去自己烧盐，自己冶铁，其利息收入则全部归给政府，于是盐铁就变成国营与官卖。这个制度，很像近代西方德国人所首先创始的所谓国家社会主义的政策。

——钱穆《中国历代政治得失》

材料四：元帝即位，天下大水，关东郡十一尤甚。二年，齐地饥，谷石三百余，民多饿死，琅邪郡人相食。在位诸儒多言盐、铁官及北假田官、常平仓可罢，毋与民争利。上从其议，皆罢之。

——班固《汉书·食货志》

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