问题 不定项选择题

下列说法正确的是  [ ]

A. 乙烯和聚乙烯都可与溴水发生加成反应

B. 酸性高锰酸钾溶液能鉴别苯、甲苯和四氯化碳

C. C2H5Br与NaOH溶液混合后充分振荡,再加入AgNO3溶液后产生沉淀,则可检验C2H5Br中含Br元素

D. C2H5Br与NaOH的乙醇溶液混合后加热,制得气体通入酸性高锰酸钾溶液中,若溶液褪色,则可检验气体中有乙烯

答案

答案:B

完形填空
完形填空 (共20小题;每小题1分,满分20分)
The moment happened 30 yours ago but it was still fresh in my memory. I was a college freshman and had   26  up most of the night before laughing and talking with friends. Now just before my first  27  of the day my eyelids were feeling heavier and heavier and my head was drifting down to my desk to make my textbook a   28 . A few minutes nap(小睡)time before class couldn’t   29 , I thought.
BOOM! I lifted my head suddenly and my eyes opened wider than saucers. I looked around with my   30  beating wildly trying to find the cause of the   31  . My young professor was looking at me with a boyish(孩子气的)smile on his face. He had   32  dropped the textbooks he was carrying onto his desk. “Good morning!”, he said still   33  . “I am glad to see everyone is   34 . Now let’s get started. ”
For the next hour I wasn’t sleepy at all. It wasn’t from the   35  of my professor’s textbook alarm clock either. It was instead from the   36  discussion he led. With knowledge and good    37 he made the material come   38  . His insight was full of both wisdom and loving-kindness. And the enthusiasm and joy that he   39  with were contagious(有感染力的). I   40  the classroom not only wide awake, but a little  41  and a little better as well.
I learned something far more important than not   42  in class that day too. I learned that if you are going to do something in this life,do it well,do it with   43  . What a wonderful place this would be if all of us did our work happily and well. Don’t sleepwalk(梦游)your way through  44  then. Wake up! Let your love fill your work. Life is too   45  not to live it well.
小题1:
A.tookB.dividedC.stayedD.put
小题2:
A.classB.testC.taskD.lecture
小题3:
A.platformB.pillowC.carpetD.wall
小题4:
A.benefitB.helpC.lastD.hurt
小题5:
A.heartB.mindC.thoughtD.head
小题6:
A.troubleB.noise
C.failureD.reference
小题7:
A.angrilyB.unfortunately
C.deliberatelyD.reasonably
小题8:
A.smilingB.talkingC.complainingD.shouting
小题9:
A.activeB.curiousC.presentD.awake
小题10:
A.soundB.shockC.revolutionD.blow
小题11:
A.fascinatingB.convincing
C.puzzlingD.encouraging
小题12:
A.detail B.senseC.humorD.design
小题13:
A.strangeB.naturalC.handyD.alive
小题14:
A.taughtB.spreadC.combinedD.started
小题15:
A.decoratedB.filledC.leftD.entered
小题16:
A.clearerB.smarterC.quieterD.stronger
小题17:
A.discussingB.speakingC.cheatingD.sleeping
小题18:
A.joyB.speed
C.aimD.qualification
小题19:
A.workB.lifeC.journeyD.college
小题20:
A.hardB.complexC.shortD.simple
单项选择题