不凡考网

从高等植物叶片中分离出4种光合色素,其中呈橙黄色的是

  • 下载次数:
  • 支持语言:
  • 884
  • 中文简体
  • 文件类型:
  • 支持平台:
  • pdf文档
  • PC/手机
  • 【名词&注释】

    叶黄素(lutein)、叶绿素a(chlorophyll a)、思想道德修养(ideological and moral cultivation)、毛白杨(chinese white poplar)、年青人、小叶杨(simon poplar)、高等植物(higher plants)、叶绿素b(chlorophyll b)、多读书、知识文化水平

  • [单选题]从高等植物(higher plants)叶片中分离出4种光合色素,其中呈橙黄色的是

  • A. 叶绿素a
    B. 叶绿素b(chlorophyll b)
    C. 胡萝卜素
    D. 叶黄素

  • 查看答案&解析 点击获取本科目所有试题
  • 举一反三:
  • [单选题]If one wants to attend a business lunch in London at l2:00, the latest train that he should take at Oxford leaves at.
  • A. 11:45
    B. 11:15
    C. 10:35
    D. 10:05

  • [单选题]真菌的异养方式为( )。
  • A. 吞食固形营养物
    B. 吸收营养物
    C. 寄生
    D. 吞食和吸收营养物

  • [单选题]是沙荒地区的优良造林树种,能抗风,抗沙埋,有“沙漠中的勇士”的称号。
  • A. 毛白杨
    B. 银白杨
    C. 小叶杨
    D. 胡杨

  • [单选题]E.I needed to buy a digital camera, one that was simply good at taking good snaps (快照), maybe occasionally for magazines. Being the cautious type, I fancied a reliable brand. So I went on the net, spent 15 minutes reading product reviews on good websites, wrote down the names of three top recommendations and headed for my nearest big friendly camera store. There in the cupboard was one of the cameras on my list. And it was on special offer. Oh joy, I pointed at it and asked an assistant, “Can I have one of those?” He looked perturbed (不安). “Do you want to try it first?” he said, It didn’t quite sound like a question. “Do I need to?” I replied ,“There is nothing wrong with it?”This made him look a bit insulted and I started to feel bad, “No, no, but you should try it,” he said encouraging ,“compare it with the others.”
  • A. I looked across at the others: shelves of similar cameras placed along the wall, offering a wide range of slightly different prices and discounts, with each company selling a range of models based around the same basic box. With so many models to choose from, it seemed that I would have to spend hours weighing X against Y, always trying to take Z and possibly H into account at the same time. But when I had finished, I would still have only the same two certainties that I had entered the store with: first, soon after I carried my new camera out of the shop., it would be worth half what I paid for it; and second, my wonderful camera would very quickly be replaced by a new model.
    B. But something in the human soul whispers that you can beat these trups by making the right choice, the clever choice, the wise choice. In the end , I agreed to try the model I had chose. The assistant seemed a sincere man . So I let him take out of my chosen camera from capboard, show how it took excellent pictures of my fellow shoppers… and when he started to introduce the special features, I interrupted to ask whether I needed to buy a carry-case and a memory card as well.
    C. Why do we think that new options(选择)still offer us anything new? Perhaps it is because they offer an opportunity to avoid facing the fact that our real choices in this culture are far more limited than we would like to imaging.
    D. 57.The shop assistant insisted that the writer should
    E. try the camera to see if there was anything wrong with it.
    F. compare the camera he had chosen with others.
    G. get more information about different companies.
    H. trust him and stop asking questions.

  • [单选题]草本与木本相比是次生性状。菊科全为草本,所以是木兰纲中最进化的一个科。( )
  • A. 正确
    B. 错误

  • [单选题].余秋雨说:“好书是岁月和空间的凝炼,集中了智者对于人性和自然的最高感悟。阅读它们,能够使年青人摆脱平庸和狭隘,发现自己的精神依托和人生可能。”这表明
  • A. 人们常常遭遇思想道徳上的“两难选择”
    B. 多读书才能提高人们的知识文化水平
    C. 加强思想道德修养能够促进知识文化修养
    D. 要在知识文化的陶冶中不断升华自己的思想道德境界

  • [单选题]
  • B. light C. rong D. soft

  • A. thickB. light
    B. rong
    C. soft

  • 本文链接:https://www.zhukaozhuanjia.com/download/lg95l9.html
  • 推荐阅读
    @2019-2026 不凡考网 www.zhukaozhuanjia.com 蜀ICP备20012290号-2