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外胚乳具胚乳作用,仅见于无胚乳种子。( )

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  • 【名词&注释】

    化妆品(cosmetic)、答题卡(answer sheet)、百合科(liliaceae)、收银台、蝶形花科(papilionaceous plants)、向日葵花盘(sunflower disc)

  • [单选题]外胚乳具胚乳作用,仅见于无胚乳种子。( )

  • A. 正确
    B. 错误

  • 查看答案&解析
  • 举一反三:
  • [单选题]I was ten when I first sat with my grandmother behind the cashier(收银台)in her general store. 71 I quickly learned the importance of treating customers politely and saying “thnak you.”At first I was paid in candy. 72 I worked every day after school, and during the summer and on weekends and holidays from 8 a.m. to 7 p.m. My father helped me set up a bannk account. 73
  • A. By the time I was 12, My grandmother thought I had done such a good job that the promoted me to selling cosmetics(化妆品). I developed the ability to look customers directly in the eye. Even though I was just a kid, women would ask me such things as “ What color do you think I should wear?” I took a real interest in their questions and was able to translate what they wanted into makeup(化妆)ideas. 74
    B. The job taught me a valuable lesson: to be a successful salesperson, you didn’t need to be a Rocket scientist—you needed to be a great listener. _____expect they are NO longer women purchasing cosmetics from me; instead, they are kids who tell me which toys they would like to see designed and developed.
    C. Later I received 50 cents an hour.
    D. Before long, she let me sir there by myself.
    E. I ended my selling a record amount of cosmetics.
    F. Today I still carry that lesson with me: I listen to customers.
    G. My grandma’s trust taught me how to handle responsibility.
    H. Soon I found myself looking more beautiful than ever before.
    I. G. Watching my money grow was more rewarding than anything I could have bought.
    J. __________

  • [单选题]阅读下列短文,从每篇短文后所给各题的四个选项(A、B、C和D)中,选出最佳选项,并在答题卡上将该项涂黑。A
  • A. My grandfather came from Hungary and was the only one in his family who settled down in the United States. The rest of his family remained in Europe. When World War I broke out, he seemed to have become another man, downhearted. Such obvious change was not born out of concern for his welfare, but out of fear: if his only son, my uncle, had to go to war, it would be cousin fighting against cousin.
    B. One day in 1918, my Uncle Milton received his draft notice. My grandparents were very upset. But my mother, at the age of 10, felt on top of the world about her soldier brother going off to war. Realizing how he was regarded by his little sister and all of her friends, my uncle bought them all service pins, which meant that they had a loved one in the service. ll the little girls were delighted.
    C. The moment came when my uncle and the other soldiers, without any training but all in uniforms, boarded the train. The band played and the crowd cheered. lthough no one noticed, I’m sure my grandmother had a tear in her eye for the only son. The train slowly pulled out, but not about a thousand yards when it suddenly paused. Everyone stared in wonder as the train slowly returned to the station. There was a dead silence before the doors opened and the men started to step out. Someone shouted, “The war is over!” For a moment, nobody moved, but then the people heard someone bark orders at the soldiers. The men lined up in two lines, walked down the steps, and with the band playing, marched down the street, as returning heroes, to be welcomed home. My mother said it was a great day, but she was just a little disappointed that it didn’t last a tiny bit longer.
    D. 51. What the grandfather was most worried about was .
    E. . the spread of the world war
    F. the safety of his two cousins
    G. a drop in his living standards
    H. his relatives killing each other

  • [单选题]According to the text.which of the following is NOT true?
  • A. Soil forms from weathered rock on the earth surface.
    B. The deeper layer of soil is darker in colour than t}le surface soil.
    C. Air pollution is partially responsible for acid soil.
    D. Groundwater tends to carry away nutrients for plant growth.

  • [单选题]I've become good friends with several of the students in my school I met in theEnglish speech contest last year.
  • A. who
    B. where
    C. when
    D. which

  • [单选题]向日葵花盘(sunflower disc)下面的总苞是由若干苞片聚集形成,苞片属( )。
  • A. 叶的变态
    B. 根的变态
    C. 茎的变态
    D. 花冠

  • [单选题]What would be the best ritle for this text?
  • A. Computers or Television
    B. Effects of Television on Children
    C. Studies on TV and College Education
    D. Television and Children's Learning Habits

  • [单选题]medicine
  • A. twice
    B. medical
    C. perfect
    D. clinic

  • [单选题]_____ by the advances in technology, many farmers have set up wind farms on their land.
  • A. Being encouraged B. Encouraging
    B. Encouraged D. Having encouraged

  • [多选题]具有中轴胎座的分类群是( )。
  • A. 蝶形花科(papilionaceous plants)
    B. 茄科
    C. 百合科
    D. 芸香科

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