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一个种群的年龄锥体呈下宽上窄的金字塔形,则该种群的年龄结构属

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  • 【名词&注释】

    交感神经(sympathetic nerve)、年龄结构(age structure)、第二性(the second sex)、唯心主义(idealism)、辩证唯物论(dialectical materialism)、不可知论(agnosticism)、胆碱能受体(cholinergic receptors)、辩证法和形而上学(dialectics and metaphysics)、物质第一性、推理题(inference question)

  • [单选题]一个种群的年龄锥体呈下宽上窄的金字塔形,则该种群的年龄结构属于( )

  • A. .稳定型
    B. 增长型
    C. 衰退型
    D. 混合型

  • 查看答案&解析 点击获取本科目所有试题
  • 举一反三:
  • [单选题]
  • A. dogB. cow
    B. lady
    C. gentleman

  • [单选题]列宁说“从物到感觉和思想”与“从思想和感觉到物”,是( )
  • A. 辩证唯物论与旧唯物论两条认识路线的对立
    B. 辩证法和形而上学(dialectics and metaphysics)的对立
    C. 唯物论和唯心论的对立
    D. 可知论与不可知论的对立

  • [单选题]正常成人每24h的原尿可达( )
  • A. 2L
    B. 20L
    C. 180L
    D. 1800L
    E. 1.5L

  • [单选题]According to the passage, parents can help their children communicate by____.
  • A. showing their own interest in other children
    B. encouraging their interest in other children
    C. playing games with them
    D. buying them more toys

  • [多选题]It is a terrible illustration of man &39; s weakness to nature ,and the tsunami(海 啸) that struck the Japanese coast in March, 2011 has illustrated the difficulty of fighting against natural disasters, even for a prosperous nation.
  • A. IS IMPOSSIBL
    B. BUT TH
    C. IS MU
    E. TO MINIMIZ
    G. AN
    H. LOSS O
    I. LI
    J. F
    K. M
    L. TAK
    M. D
    O. D
    P. BUIL
    R. D
    S.
    T. E
    V. APPROA
    W. A.TSUNAMI IS POSSIBLY PI
    X. E
    Y. UP BY TH
    Z. S

  • [单选题]心交感神经对心脏的兴奋作用,可被下列哪一种受体的颉颃剂所阻断( )
  • A. M胆碱能受体(cholinergic receptors)
    B. B1肾上腺素受体
    C. N2胆碱能受体(cholinergic receptors)
    D. B2肾上腺素受体
    E. N2胆碱能受体(cholinergic receptors)

  • [单选题]The king was glad to know that Sissa only wanted some wheat because ______.
  • A. wheat was not expensive
    B. it didn't seem much
    C. Sissa was honest to him
    D. both A and B

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