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禾本科植物茎维管束中的气隙(气腔)是遭破坏了的( )。

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  • 【名词&注释】

    禾本科植物(grass)、浪漫主义(romanticism)、内在联系(internal relations)、木质部(xylem)、维管束(vascular bundle)、韧皮部(phloem)、英国人(drakeford)、卡路里(calorie)、古代希腊人

  • [单选题]禾本科植物茎维管束中的气隙(气腔)是遭破坏了的( )。

  • A. 原生韧皮部
    B. 后生韧皮部
    C. 原生木质部
    D. 后生木质部

  • 查看答案&解析
  • 举一反三:
  • [单选题]
  • A. split
    B. spend
    C. spare
    D. save

  • [单选题]AI know what you’re thinking : pizza (比萨饼)? For breakfast? But the truth is that you can have last night’s leftovers in the a. m. if you want to
  • A. I know lots of women who skip breakfast (不吃早餐) , and they have a ton of different excuses for doing it . Some say they don’t have time. others think they’re “saving” calories (卡路里(calorie)), still others just don’t like breakfast food .
    B. But the bottom line is that eating in the morning is very important when you’re trying to lose weight. “Eating just about anything from 300 to 400 calories would be better than nothing at all,” says Katherine Brooking , R , D , who developed the super-easy eating plan for this year’s “SELF CHALLENGE”. And even pizza can be healthy if it’s loaded with vegetables, and you stick to one small piece.
    C. Breakfast is one meal I never miss, and the same goes for most weight loss success stories. Research shows that eating breakfast keeps you from overeating later in the day. Researchers at the University of Southem California found that breakfast skippers have a bigger chance of gaining weight than those who regularly have a morning meal.
    D. So eat something in the morning, anything. I know plenty of friends who end up having no breakfast altogether, and have just coffee or orange juice. I say, try heating up last night’s leftovers-it may sound crazy, but if it works for you, do it! I find if I tell myself, “You can always eat it tomorrow,” I put away the leftovers instead of eating more that night. Try it…you may save yourself some pre-bedtime calories. And watch your body gain the fat-burning effects.
    E. 41. The word “leftovers” in Paragraph 1 probably means__________.
    F. food remaining after a meal B. things left undone
    G. meals made of vegetables D. pizza topped with fruit

  • [单选题]根据内容,回答下面问题:We have met the enemy, and he is ours. We bought him at a pet shop. When monkey-pox, a disease usually found in the African rain forest, suddenly turns up in children in the American Midwest, it’s hard not to wonder if the disease that comes from foreign animals is homing in on human beings.“Most of the infections(感染)we think of as human infections started in other animals.”says Stephen Morse, director of the Center for Public Health Preparedness at Columbia University.It’s not just that we’re going to where the animals are; we’re also bringing them closer to us. Popular foreign pets have brought a whole new disease to this country. A strange illness killed Isaksen’s pets, and she now thinks that keeping foreign pets is a bad idea.“I don’t think it’s fair to have them as pets when we have such a limited knowledge of them,”says Isaksen.
  • A. “Laws allowing these animals to be brought in from deep forest areas without stricter control need changing,”says Peter Schantz. Monkey-pox may be the wake-up call. Researchers believe infected animals may infect their owners. We know very little about these new diseases. A new bug(病毒)may be kind at first. But some strains(变异体)may become harmful. Monkey-pox doesn’t look a major infectious disease. But it is not impossible to pass the disease from person to person.
    B. 第9题:We learn from Paragraph I that the pet sold at the shop may____ .
    C. come from Columbia
    D. enjoy being with children
    E. prevent us from being infected
    F. suffer from monkey-pox

  • [单选题]What dose the woman buy in the end?
  • A. A yellow T-shirt.
    B. A bule T-shirt.
    C. A pink T-shirt.

  • [单选题]中国月季引种到欧洲,经种内杂交,选育出现代月季。( )
  • A. 正确
    B. 错误

  • [单选题]鼠李科与葡萄科的区别之一在于是否具花盘。( )
  • A. 正确
    B. 错误

  • [单选题]科的拉丁学名词尾是( )。
  • A. -ales
    B. -phyta
    C. -aceae
    D. -oideae

  • [单选题]“我们全都是希腊人;我们的法律、我们的文学、我们的宗教,根源皆在希腊。”英国浪漫主义诗人雪莱这名话强调是的
  • A. 英国人(drakeford)是古代希腊人的后裔
    B. 英国文化缺乏原创性
    C. 希腊文明对西方文明影响深远
    D. 近代西方法律、文学与宗教之间存在内在联系

  • [单选题]无胚乳种子的养料贮存在子叶中。( )
  • A. 正确
    B. 错误

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