题目

下列关于高等动物细胞和它生活的内环境的叙述，正确的是A.摄入过多过咸食物后，会引起细胞体积增大B.某人皮肤烫伤后，出现的水泡中的液体主要是组织液C.内环境是机体进行生命活动和细胞代谢主要场所D.骨骼肌纤维内乳酸积累过多，会引起细胞内液减少 答案：【答案】B【解析】摄入过多过咸食物后会导致细胞外液浓度增大，进而导致水从细胞内更多的流向细胞外；内环境（细胞外液）是细胞与外界环境进行物质交换的媒介，细胞代谢的主要场所在细胞溶胶。A、摄入过多过咸的食物后，会引起细胞外液的渗透压升高，则细胞失水，细胞体积减小，A错误；B、完型填空 （共20小题，每小题1分，满分20分）The sun didn’t come out. The 15 – year – old girl Razeena said goodbye to her mother and left for school. She was thinking about the coming Christmas and   21  the holiday lights at the nearby senior citizens’ apartment   22  she noticed some smoke through the door.The building is on fire ! She looked around wildly,  23   not a soul was in   24    .Razeena   25  .“Fire ! ” she yelled, running into the hallway and striking on every door she saw, “Everybody get   26  !” The building had two floors, she pulled herself   27  ,where the thick   28  was hanging just a few feet   29  the floor. She could see pairs of slippered feet——but no one was moving. She   30  they couldn’t see where to go ! “Down here ! and follow me !” she yelled.   31  a sleeve over her mouth, she led the elderly residents (居民) down the stairs.So she pounded up and down the stairs, weaving through the smoke and heat to   32  more people. “ Take my arm,” she told the extremely   33  residents. Her eyes burned and flames were hissing louder. Finally, she led the last person out.   34  stood on the side walk, dazed and crying. “Thank you so much,” they told her over and over, “ Without you, we never would have   35 .”When Razeena walked home, shaking and   36  with dirt, mother cried, “ What happened?!”“ There was a fire…so many people … I think I   37  them all.” She burst into tears, “ I   38  my uniform. I thought you might be mad! ” Mother   39  her head, tears in her eyes, “Oh honey, I’m so   40  of you,” she whispered.【小题1】A．seeingB．admiringC．lightingD．noticing【小题2】A．whenB．whileC．asD．for【小题3】A．andB．soC．butD．however【小题4】A．publicB．bedC．schoolD．sight【小题5】A．panickedB．lookedC．delightedD．watched【小题6】A．upB．downC．outD．in【小题7】A．downstairsB．upstairsC．forwardD．back【小题8】A．smokeB．fireC．flameD．dirt【小题9】A．inB．onC．beyondD．above【小题10】A．askedB．wonderedC．realizedD．cried【小题11】A．FoldingB．HoldingC．CuttingD．Finding【小题12】A．searchB．bringC．careD．fetch【小题13】A．excitedB．movedC．frightenedD．surprised【小题14】A．SheB．HeC．YouD．They【小题15】A．carried outB．made it C．gone aheadD．set free【小题16】A．coveredB．mixedC．connectedD．pleased【小题17】A．savedB．satisfiedC．ledD．dismissed【小题18】A．lostB．injuredC．ruinedD．tore【小题19】A．droppedB．shookC．noddedD．bent【小题20】A．thankfulB．tiredC．kindD．proud