输入一个实数x，若它是非负数就输出它，否则不输出它，画一个程序框图解决这个问题，

发布时间：2017-05-18 01:40 │ 来源：www.tikuol.com

题型：解答题

问题：

输入一个实数x，若它是非负数就输出它，否则不输出它，画一个程序框图解决这个问题，再写出相应的程序。

考点：程序框图

题型：解答题

完形填空。

     An old man lived in a nice house with a large garden. He took care of his   1   all the time, watering and
fertilizing them.
     One day a young man went by the   2 . He looked at the beautiful flowers, imagining how happy he could
be   3   he lived in such a beautiful place. Then, suddenly he found the old gardener was   4  . He was very
surprised about this and asked, "You can't see these flowers.   5   are you busy taking care of them every day?"
     The old man smiled and said "I can tell you four   6  . First, I was a gardener when I was young, and I
really like this job. Second,   7   I can't see these flowers, I can touch them.   8  , I can smell the sweetness
of them. As to the last one, that's   9 ."
    "Me? But you don't know me," said the young man.
     "Yeah, it's  10  that I don't know you. But I know that flowers are angels that everybody  11 . We enjoy
the happiness these flowers have brought us."
     The blind man's work opened our eyes and  12  our hearts, which also made his life  13 . It was just like
Beethoven, who became deaf in his later life and wrote many great musical works. Beethoven himself couldn't
14  his wonderful music, but his music has  15  millions of people to face their difficulties bravely. Isn't it one
kind of happiness?

( )1. A. flowers
( )2. A. balcony
( )3. A. after
( )4. A. blind
( )5. A. What
( )6. A. stories
( )7. A. although
( )8. A. First
( )9. A. me
( )10. A. true
( )11. A. greets
( )12. A. broke
( )13. A. emptier
( )14. A. write
( )15. A. changed

B. trees
B. kitchen
B. as
B. famous
B. Who
B. reasons
B. since
B. Second
B. you
B. hard
B. doubts
B. hurt
B. busier
B. hear
B. affected

C. vegetables
C. garden
C. before
C. smart
C. Why
C. excuses
C. because
C. Third
C. my mother
C. cool
C. meets
C. pleased
C. luckier
C. play
C. discovered

D. grass
D. study
D. if
D. friendly
D. Which
D. conclusions
D. unless
D. Fourth
D. my son
D. fair
D. knows
D. treated
D. happier
D. believe
D. encouraged

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题型：解答题

（10分）下图是A~Z在一定条件下的转化关系（部分反应物或产物未列出）。其中，A是生活中广泛使用的金属单质，常温下C是一种常见液体化合物，E、F、X均为气体。物质Y和Na₂AO₄均有强氧化性，可用于杀菌消毒，Z是一种红褐色固体。

请回答下列问题：

（1）Y的电子式为；

（2）在①~⑧中属于氧化还原反应，但又不是化合反应的是（填序号）

（3）反应⑤的离子方程式是

（4）若在反应④中转移电子数为2N_A，则消耗的F在标准状况下的体积是 L。

（5）反应⑧的化学方程式是

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题型：解答题

根据《水利工程设计概(估)算编制规定》，建筑及安装工程费用中的税金包括______。

A．增值税

B．耕地占用税

C．城市维护建设税

D．教育费附加

E．营业税

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题型：解答题

无因管理的构成要件中，区别于代理的是( )。

A．为他人管理事务

B．无法定或约定义务

C．为他人谋利益

D．避免他人利益受损

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题型：解答题

实证，是对人体感受（）或体内（）堆积产生的有余、亢盛、停聚为特点的病理概括。

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