题目

下列各组物质，不管以何种比例混合，只要总物质的量一定，完全燃烧消耗氧气的量也一定的是 A．CH4与C2H4   B．C2H6与CH3CH2OH    C．CO和H2       D．C2H4与C6H6 答案：C 完形填空。      The moment happened 30 yours ago but it was still fresh in my memory. I was a collegefreshman and had ___1__up most of the night before laughing and talking with friends. Now just before my first __2__of the day my eyelids were feeling heavier and heavier and my head was drifting down to my desk to make my textbook a __3__. A few minutes nap(小睡)time before class couldn't __4__, I thought.     BOOM! I lifted my head suddenly and my eyes opened wider than saucers. I lookedaround with my __5_beating wildly trying to find the cause of the __6__. My young professor was looking at me with a boyish(孩子气的)smile on his face. He had __7__dropped the textbooks he was carrying onto his desk. "Good morning!", he said still __8__. "I am glad to see everyone is __9__. Now let's get started. "     For the next hour I wasn't sleepy at all. It wasn't from the __10__of my professor'stextbook alarm clock either. It was instead from the __11__discussion he led. Withknowledge and good   __12__he made the material come __13__. His insight was full of both wisdom and loving-kindness. And the enthusiasm and joy that he __14__with were contagious(有感染力的). I __15__the classroom not only wide awake, but a little __16__and a little better as well.      I learned something far more important than not   __17__in class that day too. I learned that if you are going to do something in this life,do it well,do it with __18__. What a wonderful place this would be if all of us did our work joyously and well. Don't sleepwalk(梦游)your way through __19__then. Wake up! Let your love fill your work. Life is too __20__not to live it well. (     )1．A. took(     )2．A. class(     )3．A. platform(     )4．A. benefit(     )5．A. heart(     )6．A. trouble(     )7．A. angrily(     )8．A. smiling(     )9．A. active(     )10．A. sound(     )11．A. fascinatin(     )12．A. gesture(     )13．A. strange(     )14．A. taught(     )15．A . decorated(     )16．A. clearer(     )17．A. discussing(     )18．A. joy(     )19．A. work(     )20．A. hard B. dividedB. testB. pillowB. helpB. mindB. noiseB. carelesslyB. talkingB. curiousB. shockB. convincingB. senseB. naturalB. spreadB. filledB. smarterB. speakingB. speedB. lifeB. complex C. stayedC. taskC. carpetC. lastC. thoughtC. failureC. deliberatelyC. complainingC. presentC. interruptionC. puzzlingC. humor C. handyC. combinedC. leftC. quieterC. cheatingC. aimC. journeyC. short D. put D. lectureD. wall D. hurt D. head D. incidentD. accidentallyD. shouting D. awakeD. blowD. encouraging D. design D. alive D. startedD. enteredD. strongerD. sleepingD. de terminationD. college D. simple