题目

下面是真核细胞中糖类合成与分解过程示意图，下列叙述错误的是(CH2O)+O2 CO2+H2O+能量A.①过程中，产生的H2O中的氧全部来自O2B.②过程中，产生的(CH2O)中的氧全部来自CO2C.②过程在叶绿体中进行，①过程主要在线粒体中进行D.①过程产生的能量大部分以热能形式散失，故只有少量的能量参与②过程 答案：【答案】D【解析】图中①表示有氧呼吸过程，发生的场所主要是线粒体；②过程表示光合作用过程，主要在叶绿体中进行。A、①过程为有氧呼吸过程，产生的H2O的过程为有氧呼吸的第三阶段，水中的氧全部来自O2，A正确；B、②过程中，产物水中的氧都变成了氧气，故另一产物二氧化碳中的氧都变成了 Once I went to a railway station near New York. I  36  to take the night train there.  37  of people were pushing into the  38  train. I found a railway official and asked him if I could get a place in a sleeping car,  39  he said sharply, “No, you can’t. The train is full. Don’t  40  me any more.”I was very  41  indeed. I said to the friend who was with me, “ he talked to me like this  42 he doesn’t know that I am a famous writer. If he knew…But before I could 43 my sentence my friend said, “Don’t be  44 . How could that help you? Whoever you are, there are no  45  seats on the train.” I was  46  he was wrong, so I went up to the same official again and told him that I was Mark Twain. But all he said, “I told you not to trouble me any more.”Just then I  47  a young porter in a sleeping car looking at me, He whispered something to the train conductor, and that conductor came over to me and said very  48 , “ Can I help you, sir?” “ I  49 do.” I answered.The porter took out boxes and we got on to the train. When the porter saw we were comfortably  50  in our places, he said, “Now. Is there anything you want, sir? Because you can have whatever you  51 .” After the porter had gone, my friend looked 52  . He said. “I am  53  sorry I said those things to you just now…” Just then the porter came again and said. “ Oh. Sir, I  54  you immediately”. “Really?” I said happily, “of course”, he said. “I recognized you the  55  I saw you and told the conductor that you are Mr Smith, the mayor of New York City.”小题1:A．managedB．failedC．usedD．happened小题2:A．Some B．Most C．CrowdsD．Many小题3:A．nightB．busyC．fullD．leaving小题4:A．but B．andC．thoughD．where小题5:A．ask B．troubleC．followD．strike小题6:A．nervousB．uneasyC．hurtD．busy小题7:A．as ifB．sinceC．supposeD．because小题8:A．completeB．continueC．makeD．speak小题9:A．upsetB．sadC．foolishD．discouraged小题10:A．moreB．enoughC．ourD．empty小题11:A．wonderingB．sureC．toldD．thinking小题12:A．metB．noticedC．rememberedD．knew小题13:A．loudlyB．calmlyC．politelyD．slowly小题14:A．can B．shallC．certainlyD．must小题15:A．seatingB．settledC．sleepingD．drinking小题16:A．takeB．bringC．likeD．buy小题17:A．surprisedB．ashamedC．sorrowfulD．anxious小题18:A．awfullyB．muchC．moreD．too much小题19:A．admiredB．realizedC．recognizedD．respected小题20:A．momentsB．whileC．minuteD．soon