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比较理想的耕种土壤是( )

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  • 【名词&注释】

    输尿管(ureter)、盐碱土(halomorphic soil)、相互影响(interaction)、《战国策》(the warring states stratagems)、淋巴管(lymphatic)、编年体史书(chronological history writing)、纪传体史书、实质性器官(parenchymatous organ)

  • [单选题]比较理想的耕种土壤是( )

  • A. 沙土
    B. 壤土
    C. 黏土
    D. 盐碱土

  • 查看答案&解析
  • 举一反三:
  • [单选题]植物的密度效应指的是( )
  • A. 作为构件生物的植物本身构件间的相互影响
    B. 同一种群的植物邻接个体间的相互影响
    C. 不同种群的植物间的相互影响
    D. 植物种群不同集群间的相互影响

  • [单选题]下列不属于短骨的是 ( )
  • A. 跟骨
    B. 指骨
    C. 三角骨
    D. 骰骨
    E. 豌豆骨

  • [单选题]关于肾形态的描述,下列选项错误的是 ( )
  • A. 形似蚕豆的实质性器官(parenchymatous organ)
    B. 出入肾门的结构总称为肾蒂
    C. 肾门是肾血管、淋巴管、神经和输尿管出入的部位
    D. 内侧缘凹陷为肾门
    E. 右侧肾蒂较左侧短

  • [单选题]Passage TwoHuman needs seem endless. They might be regarded as making up several levels. When there is enough money to satisfy one level of needs, another level appears.
  • A. The first and most basic level of needs involves food. Once this level is satisfied, the second level of needs, clothing and some sort of shelter, appears. By the end of World War Ⅱ , these needs were satisfied for a great majority of Americans. Then a third level appeared. It included such items as automobiles and new houses.
    B. By 1957 or 1958 this third level of needs was fairly well satisfied. Then, in the late 1950s, a fourth level of needs appeared: the "life-enriching" level. While the other levels involve physical satisfaction, that is, the feeding, comfort, safety, and transportation, this level stresses mental needs for recognition, achievement, and happiness. It includes a variety of goods and services. Among them are vacation trips, the best medical and dental care, and recreation. Also included here are fancy goods and the latest styles in clothing.
    C. On the fourth level, a lot of money is spent on services, while on the first three levels more is spent on goods.
    D. A fifth level would probably involve needs that can be achieved best by community action. Consumers may be spending more on taxes to pay for government action against disease, ignorance, crime, and prejudice. After filling our stomachs, our clothes closets, our garages, our teeth, and our minds, we now may seek to ensure the health, safety, and leisure to enjoy more fully the good things on the first four levels.
    E. 40. According to the passage, man will begin to think about such needs as housing and clothing only when______.
    F. he has saved up enough money
    G. he has grown dissatisfied with his simple shelter
    H. he has satisfied his hunger
    I. he has learned to build houses

  • [单选题]《战国策》是一部( )
  • A. 笔记体史书
    B. 国别体史书
    C. 编年体史书(chronological history writing)
    D. 纪传体史书

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