问题 选择题

超临界CO2流体是一种和水相似,能阻燃、溶解能力强的绿色环保溶剂。下列有关超临界CO2流体的说法错误的是

A.不能燃烧

B.是CO2呈现的一种状态

C.可取代多种有毒、易燃的溶剂

D.是一种与CO2化学性质不同的物质

答案

答案:D

题目分析:超临界CO2流体是二氧化碳的一种状态,化学性质和二氧化碳相似,根据题目所给的用途可知D是错误的

填空题
完形填空
阅读下面短文,从短文后各题所给的四个选项中,选出可以填入空白处的最佳选项,并在答题卡上将该项涂黑。
After years of searching, a truth seeker was told to go to a cave, in which he would find a well. “Ask the well what is   36  , ” he was advised, “and the well reveal (告诉,揭露) it to you.” Having found the well, the seeker asked that most basic and important   37 . And from the depths came the answer: “Go to the village crossroad, and there you shall find what you are seeking.”
Full of   38  the man ran to the crossroad to   39  only three rather uninteresting shops. One shop was selling pieces of metal, another sold   40 , and thin wires were for sale in the third. Nothing and no one there seemed to   41  much to do with the revelation of truth.
Disappointed, the seeker returned to the well to demand an   42 , but he was told only: “You will   43   in the future.”
As years went by, the   44  of his experience at the well gradually   45  until one night, while he was walking, the sound of sitar (西塔琴) music   46  his attention. It was wonderful and it was   47  with great skill and inspiration.
Deeply  48 , the truth seeker felt drawn towards the   49 . He looked at the fingers dancing over the strings. And then suddenly he let out a cry of joyful   50 : the sitar was made out of wires and pieces of metal and wood just like   51  he had once seen in the three stores.
At last he understood the   52  of the well: we have already been given everything we need; our   53  is to assemble (聚集) and use them in the proper way. Nothing is   54  so long as we recognize only fragments (碎片). But as soon as the pieces are put together, something new appears, whose nature we could not have   55  by considering the fragments alone.
小题1:
A.truthB.hopeC.future D.music
小题2:
A.factB.reason C.questionD.well
小题3:
A.energyB.hopeC.mysteryD.surprise
小题4:
A.getB.countC.findD.open
小题5:
A.instrumentsB.clothingC.foodD.wood
小题6:
A.connectB.haveC.prepareD.offer
小题7:
A.explanationB.advice C.excuse D.opportunity
小题8:
A.succeedB.discoverC.payD.understand
小题9:
A.bitterness B.failure C.memoryD.secret
小题10:
A.doubled B.forgot C.disappearedD.recovered
小题11:
A.paidB.lostC.splitD.caught
小题12:
A.playedB.broadcastC.enjoyedD.conducted
小题13:
A.annoyed B.movedC.confusedD.frightened
小题14:
A.adviserB.directorC.composerD.player
小题15:
A.admirationB.distinctionC.recognitionD.imagination
小题16:
A.thoseB.thatC.it D.them
小题17:
A.secretB.messageC.theory D.benefit
小题18:
A.targetB.difficultyC.taskD.shortcoming
小题19:
A.interestingB.meaningful C.accessibleD.successful
小题20:
A.foreseen(预见)B.decidedC.judgedD.formed