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阅读理解 For years I wanted a flower garden. I'd spend hours thinking of different things I could plant that would look nice together. But then we had Matthew. And Marvin. And the twins,    Alisa and Alan. And then Helen. Five children. I was too busy raising them to grow a garden. Money was tight,  as well as time. Often when my children were little,    one of them would want something that cost too much,    and I'd have to say,    'Do you see a money tree outside?Money doesn't grow on trees,    you know.' Finally,   all five got through high school and college and were off on their own. I started thinking again about having a garden. I wasn't sure,  though. I mean,   gardens do cost money,    and after all these years I was used to living on a pretty lean, nofrills budget. Then,  one spring morning,    on Mother's Day,  I was working in my kitchen. Suddenly,  I realized that cars were tooting their horns as they drove by. I looked out of the window and there was a new tree,   planted right in my yard. I thought it must be a weeping willow,    because I saw things blowing around on all its branches. Then I put my glasses on-and I couldn't believe what I saw. There was a money tree in my yard! I went outside to look. It was true!There were dollar bills,    one hundred of them,    taped all over that tree. Think of all the garden flowers I could buy with one hundred dollars! There was also a note attached:'IOU eight hours of digging time. Love,    Marvin.' Marvin kept his promise,  too. He dug up a nice tenbyfifteen foot bed for me. And my other children bought me tools,    ornaments,  a trellis(棚架),  a sunflower stepping stone and gardening books. That was three years ago. My garden's now very pretty,  just like I wanted. When I go out and weed or tend my flowers,    I don't seem to miss my children as much as I once did. It feels like they are right there with me. I live up in Michigan's Upper Peninsula,  where winters are long and cold,  and summers are too short. But every year now,    when winter sets in,  I look out of my window and think of the flowers I'll see next spring in my little garden. I think about what my children did for me,    and I get tears in my eyes every time. I'm still not sure that money grows on trees. But I know love does! 1. By saying 'Do you see a money tree outside…'the mother actually means '________'. A. Observation is the best teacher B. Seeing is believing C. The outsider sees the most of the game D. It is not easy to gain money 2. The best title for the passage would probably be '________'. A. My flower garden B. Marvin helps to realize my dream C. Love in Michigan D. Money grows on trees 3. The underlined word 'nofrills'in the fifth paragraph is similar in meaning to '________'. A. wasteful B. tight C. absurd D. helpful 4. From the last three paragraphs we can infer that the mother is________. A. divorced when she was young B. not caring for her kids any longer C. alone but not at all lonely D. prouder with her garden than with her kids
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【单选题】下列哪项不符合呼吸性酸中毒合并代谢性酸中毒的表现()。
A.
HCO3降低
B.
PaCO2升高
C.
AB>SB
D.
pH降低
E.
BE低于正常
【单选题】HPIC与GC比较可忽略纵向扩散项,其主要原因是: A.系统压力较高
A.
流速比GC的快
B.
流动相的黏度大
C.
柱温低
D.
:C
E.
r>2、在反相键合相色谱法中固定相与流动相的极性关系是:
F.
固定相的极性>流动相的极性
G.
固定相的极性
H.
固定相的极性=流动相的极性
I.
不一定,视组分性质而定
J.
:B K. r>3、在反相键合相色谱法中,流动相常用: L. 甲醇-水
【多选题】下列哪项不符合代谢性酸中毒的表现
A.
呼吸浅快
B.
口唇呈樱红色
C.
发生手足搐溺
D.
精神萎靡,烦躁不安
E.
细胞内液钾降低,细胞外液钾增高
【单选题】下列关于正相色谱与反相色谱说法正确的是()
A.
正相色谱是指固定相的极性低于流动相的极性
B.
正相色谱过程中,非极性分子或极性小的分子比极性大的分子移动速度慢
C.
反相色谱是指固定相的极性低于流动相的极性
D.
反相色谱过程中,极性大的分子比极性小的分子移动速度慢
E.
正相色谱 常用的固定相有 C18 或 C8 键合相
【判断题】在 网络 中查询“神6发射时间”,比较好的查找方法是用关键词查找比较快捷。 ( )
A.
正确
B.
错误
【判断题】反相键合相色谱法的固定相极性比流动相极性强
A.
正确
B.
错误
【单选题】批处理系统的主要优点是系统的吞吐量大、资源利用率高、系统的开销较小。( )
A.
正确
B.
错误
【简答题】反相键合相色谱法采用 键合相为固定相,如 等化学键合相,有时也用 的键合相为固定相,流动相以 水为基础溶剂,固定相的极性比流动相 。
【单选题】下列哪项不符合感染性休克的表现()
A.
心率加快,脉搏减弱
B.
肢端冷,毛细血管再充盈时间延长
C.
早期血压下降,脉压变小
D.
代谢性酸中毒
E.
尿量减少
【单选题】单稳态触发器有
A.
一个稳态,一个暂稳态
B.
两个稳态
C.
两个暂稳态
D.
无稳态
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