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筛域,即筛管分子的侧壁上特化的初生纹孔场。( )

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  • 【名词&注释】

    泥石流(debris flow)、世界市场(world market)、木本油料(oil from woody plant)、自然经济(natural economy)、杜鹃花属(rhododendron)、进一步发展(further development)、熟练程度(proficiency)、农产品商品化(commercialization of agricultural produ ...)、厚壁孢子(chlamydospore)、商品化程度(the degree of commodity)

  • [单选题]筛域,即筛管分子的侧壁上特化的初生纹孔场。( )

  • A. 正确
    B. 错误

  • 查看答案&解析
  • 举一反三:
  • [单选题]阅读下列段文,从每题所给的四个选项(A、B、C和D)中,选出最佳选项A
  • A. Only three local students won Chinese Blog(博客)Competition. nd 15 of the 18 awards want to students from China.
    B. 170 students’ task: to get a fully-designed blog up and running , complete with many postings based on a theme of choice—all written in Chinese.
    C. Themes ranged from local opinions-such as the usage of Singlish, education and whether Singapore can be a cultural centre-to food blogs.
    D. The entries were judged on Language proficiency( 熟练程度(proficiency))and the quality of writing, as well as the design and level of exchanging ideas with readers.
    E. cademics from the National University of Singapore and the SIM University IT experts, and a journalist from Chinese newspaper Lianhe Zaobao in Singapore made up the judges.
    F. In the end, only three Singaporean students made it to the award list—the rest of the awards were swept up by students from China. Ks5u
    G. “No surprise. ”said Mr. Chow Yaw Long, 37 , teachers in charge from Lanova Junior College, which organized the event. “lthough the topics were local subjects, the foreign students were generally better in terms of the content of the posts and their grasp of the Chinese language. ”
    H. One of the three local students winning the first prize in the Best Language ward was blogger Christina Gao 19, from the Saint ndrew’s Junior College, who spared no effort in researching for and writing her blog. Each entry took her between five and seven days to produce, complete with pictures and even podcasts (播客)
    I. Her advice for bloggers is: Be responsible .
    J. “Some bloggers out there only seek to blame the authorities and other bloggers.” Said Miss Gao. “I think they lack responsibilities and there is no value to their posts.”
    K. 56. The competition was organized by
    L. Chinese newspaper Lianhe Zaobao
    M. Inova Junior College D. the Saint ndrew’s Junior College

  • [单选题]杜鹃花属(Rhododendron)各种多是世界著名的( )树种。
  • A. 材用
    B. 药用
    C. 观赏
    D. 木本油料

  • [单选题]有些蓝藻能固定游离氮素是因为有( )。
  • A. 厚壁孢子(chlamydospore)
    B. 无性孢子
    C. 异形胞
    D. 藻殖段

  • [单选题]对这首散曲分析不正确的一项是(3分)
  • A. 本曲描写尧庙社日活动情景,展现了当地的民风民俗。
    B. “社坛烟淡散林鸦”暗示了村民举行祭祀活动的季节。
    C. “山如画”描写远山明丽的风光,渲染烘托社日活动。
    D. 本曲用词清新高雅,但是整体仍不失通俗朴茂的本色。

  • [单选题]1873—1910年,我国农产品出口总值呈不断上升的趋势。促成这种趋势的因素不包括
  • A. 列强对华经济掠夺加强
    B. 农产品商品化(commercialization of agricultural produ)程度提高
    C. 自然经济进一步发展
    D. 世界市场最终形成

  • [单选题]
  • A. radio
    B. television
    C. stage
    D. bed

  • [单选题]不具花被的分类群是( )。
  • A. 木兰科
    B. 杨柳科
    C. 石竹科
    D. 百合科

  • [单选题]从地形和降水条件分析,最易发生泥石流的网格区是
  • A. ①
    B. ②
    C. ④
    D. ⑤

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