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在植物系统演化中,最先产生的器官为( )。

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  • 【名词&注释】

    文言文(classical chinese)、天人之际(correlation between the heaven and huma ...)、平均作用力(mean carrier frequency effort)、单位面积(unit area)、精义入神、分子热运动(molecular thermalmotion)

  • [单选题]在植物系统演化中,最先产生的器官为( )。

  • A. 根
    B. 茎
    C. 叶
    D. 花

  • 查看答案&解析
  • 举一反三:
  • [单选题]
  • A. how
    B. where
    C. what
    D. when

  • [单选题](一)阅读下面的文言文,完成17—21题。(18分)胡叟,字伦许,安定临泾人也。世有冠冕,为西夏著姓。叟少聪敏,年十三,辨疑释理,知名乡国。其意之所悟,与成人交论,鲜有屈焉。学不师受,友人劝之,叟曰:"先圣之言,精义入神者,其唯《易》乎?犹谓可思而过半。末世腐儒,粗别刚柔之位,宁有探赜①未兆者哉?就道之义,非在今矣。"及披读群籍,再阅于目,皆诵于口。好属文,既善为典雅之词,又工为鄙俗之句。以姚政将衰,遂入长安观风化,隐匿名行,惧人见知。时京兆韦祖思,少阅典坟,多蔑时辈,知叟至,召而见之。祖思习常,待叟不足,叟聊与叙温凉,拂衣而出。祖思固留之,曰:"当与君论天人之际,何遽而反乎?"叟对曰:"论天人者,其亡久矣。与君相知,何夸言若是也。"遂不坐而去。至主人家,赋韦杜二族,一宿而成,时年十有八矣。其述前载无违旧美,叙中世有协时事,而末及鄙黩②人皆奇其才,畏其笔。世犹传诵之,以为笑狎。
  • A. 叟孤飘坎壈,未有仕路,遂入汉中。刘义隆梁秦二州刺史冯翊吉翰,以叟才士,颇相礼接。授叟末佐,不称其怀。未几,翰迁益州,叟随入蜀,多为豪俊所尚。时蜀沙门法成,鸠率僧旅,几于千人,铸丈六金像。刘义隆恶其聚众,将加大辟。叟闻之,即赴丹阳,启申其美,遂得免焉。复还于蜀。法成感之,遗其珍物,价直千余匹。叟谓法成曰:“纬萧何人,能弃明珠?吾为德请,财何为也?”一无所受。
    B. 17、对下列句子中加点词语的解释,不正确的一项是
    C. 尠有屈焉 屈:屈辱。
    D. 鸠率僧旅 鸠:聚合。
    E. 将加大辟 大辟:死刑。
    F. 遗其珍物 遗:赠送

  • [单选题]下列说法正确的是
  • A. 气体对器壁的压强就是大量气体分子作用在器壁单位面积上的平均作用力
    B. 气体对器壁的压强就是大量气体分子单位时间作用在器壁上的平均冲量
    C. 气体分子热运动(molecular thermalmotion)的平均动能减少,气体的压强一定减小
    D. 单位面积的气体分子数增加,气体的压强一定增大

  • [单选题]
  • A. imagine
    B. recommend
    C. predict
    D. understand

  • [单选题]_______.
  • A. conclusion
    B. description
    C. evaluation
    D. introduction

  • [单选题]下列各组语句中,加点的词的意义和用法都相同的一组是
  • A. 清优主之 不害清之为富也
    B. 市人以其异,皆笑之 清不以怠遇其人
    C. 清其有道者欤 执其道不废
    D. 求者益众,其应益广 一旦复柄用,益厚报清

  • [单选题]BLove, success, happiness, family and freedom----how important are these values to you? Here is one interview which explores the fundamental questions in life.
  • A. Question: Could you introduce yourself first?
    B. Answer: My name is Misbah, 27 years old. I was born in a war-torn area. Right now I’m a web designer.
    C. Q: What are your great memories?
    D. A: My parents used to take us to hunt birds, climb trees, and play in the fields. For me it was like a holiday because we were going to have fun all day long. Those are my great memories.
    E. Q: Does your childhood mean a lot to you?
    F. A: Yes. As life was very hard, I used to work to help bring money in for the family. I spent my childhood working, with responsibilities beyond my age. However, it taught me to deal with problems all alone. I learnt to be independent.
    G. Q: What changes would you like to make in your life?
    H. A: If I could change something in my life, I’d change it so that my childhood could have taken place in another area. I would have loved to live with my family in freedom. Who cares whether we have much money, or whether we have a beautiful house? It doesn’t matter as long as I can live with my family and we are safe.
    I. Q: How do your get along with your parents?
    J. A: My parents supported me until I came of age. I want to give back what I’ve got. That’s our way. But I am working in another city. My only contact with my parents now is through the phone, but I hate using it. It filters(过滤)out your emotion and leaves your voice only. My deepest feelings should be passed through sight, hearing and touch.
    K. 60. In Misbah’s childhood, .
    L. he was free from worry
    M. he liked living in the countryside
    N. he was fond of getting close to nature
    O. he often spent holidays with his family

  • [单选题]数目固定,但在次生生长中可不断延长的初生射线为( )。
  • A. 维管射线
    B. 髓射线
    C. 韧皮射线
    D. 木射线

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