自然科学史中很多发现和发明都是通过类比推理法提出来的。烯烃或炔烃在酸性KMnO4

发布时间：2017-05-27 13:15 │ 来源：www.tikuol.com

题型：选择题

问题：

自然科学史中很多发现和发明都是通过类比推理法提出来的。烯烃或炔烃在酸性KMnO₄溶液的作用下，分子中的不饱和键完全断裂，此法可用于减短碳链或利用产物反推不饱和烃的结构等。已知烯烃与酸性 KMnO₄溶液反应的氧化产物的对应关系为

现有某烯烃与酸性KMnO₄溶液作用后得到的氧化产物有CO₂、乙二酸(HOOC-COOH)和丙酮 ( )，则该烯烃结构简式可能是 [ ]

A．

B．

C． CH₂=CH-CH=CHCH₂CH₃

D．

考点：烯烃的通性

题型：选择题

完形填空。

     Denny Crook was a famous photographer. He traveled all over the world, taking pictures for magazines
and newspapers, and won many prizes.
     "I'll do anything to get a good photo," he often said. "I'll go anywhere at any time, even if it is    1 ."
     And he told the    2   . He had photos of earthquakes, forest fires, floods and even wars. If something
interesting happened, Denny went to photo it.
     He was a married man and his wife often asked him to take her with him, but he always    3   . "I'll
travel for my work, not for    4 ," he told her. "You won't enjoy yourself, and I won't have    5    to look
after you. Sometimes there's not even anywhere to    6   , and I have to sleep outside. I often don't have a
good    7    or a bath for days. You won't like it."
    "Denny, I'm not a child," his wife didn't    8   . "I can look after myself. Please take me with you the
next time you go overseas."
     Denny did not say anything, but he    9    about it, and when he was asked to go to Africa he said to
his wife,"You can come to Africa with me if you want to. I've got to take photos of wild   10   there. It
should be interesting and not too uncomfortable."
     His wife was very   11 , and at first she had a very enjoyable time.
     Then Denny went off to   12   some lions to photo. His wife went with him, but before long they
became separated. She walked down one path while he walked down the other.
     Suddenly, Denny heard her   13 . He ran back and saw her running toward him. A huge lion was
chasing her.
     Quickly Denny took his camera out of its case and   14   it at his wife and the lion.
     Then he shouted, "  15 , woman! I can't get you both in the picture!"

( )1. A. dangerous
( )2. A. lie
( )3. A. allowed
( )4. A. wealth
( )5. A. money
( )6. A. meet
( )7. A. meal
( )8. A. agree
( )9. A. worried
( )10. A. land
( )11. A. confused
( )12. A. find
( )13. A. singing
( )14. A. threw
( )15. A. Hurry up

B. natural
B. reason
B. refused
B. prize
B. time
B. work
B. picnic
B. understand
B. forgot
B. flowers
B. excited
B. feed
B. crying
B. fired
B. Look out

C. convenient
C. news
C. failed
C. pleasure
C. interest
C. shop
C. room
C. reply
C. asked
C. animals
C. surprised
C. drive
C. laughing
C. showed
C. Slow down

D. impossible
D. truth
D. joked
D. luck
D. ability
D. stay
D. party
D. complain
D. thought
D. people
D. disappointed
D. shoot
D. cheering
D. pointed
D. Go ahead

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Pick病（）

A．进行性多灶性白质脑病

B．进行性风疹性全脑炎

C．亚急性硬化性全脑炎

D．Gerstmann-Straussler-Scheinker综合征

E．单纯疱疹病毒性脑炎

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取供试品0.10g，加无水乙醇5ml溶解后，加二苯胺试液1滴，用硫酸铈滴定液(0.01mol/L)滴定，不得超过1.0ml

A．炽灼残渣
B．酸度
C．生育酚
D．正己烷
E．溶液的澄清度
以下维生素E检查方法所对应的检查项目是

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书面表达。

现在养宠物的人越来越多，虽然宠物给人们带来了很多快乐，但同时也引发了不少问题。

请写一篇短文，描述一下养宠物的弊端。具体内容包括：

1．吵、脏、乱影响环境；

2．带来经济上额外的花费；

3．……

注意：1．词数100左右；

2．可以适当增加细节，以使行文连贯；

3．标题已为你写好。

Why I Quit Keeping a Pet

_____________________________________________________________________________

________________________________________________________________________________

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下列对梗阻性肾病的诊断中，错误的是（）。

A.尿路造影前需拍泌尿系X线平片

B.首选CT检查，简便无损伤

C.排尿困难者，注意有无 * * 口狭窄，前列腺是否增大等

D.糖尿病患者，注意有无神经源性膀胱

E.做尿细菌培养有助于病因诊断

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