在蛋白质合成的过程中,氨酰tRNA进入核糖体的哪一部位()A.供体部位 B.受体部位

题型:单项选择题

问题:

在蛋白质合成的过程中,氨酰tRNA进入核糖体的哪一部位()

A.供体部位

B.受体部位

C.肽转移酶中心

D.GTP酶部位

E.以上都不是

考点:生物学细胞基本知识细胞基本知识题库
题型:单项选择题

This ship set sail and gradually disappeared where the sea ________ the sky.

A.meets

B.reflects

C.catches

D.connects

题型:单项选择题
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
题型:单项选择题

一患儿误吸入一异物,出现呼吸困难,胸部X线片如图,可诊断为()

A.总支气管异物

B.左支气管异物

C.右支气管异物

D.肺炎

E.以上都不是

题型:单项选择题

某男,28岁,平素嗜食辛辣,一个月前因饮酒过度引起上腹部疼痛,多方治疗效果不佳。现病人胃脘隐隐灼痛,饥不欲食,嘈杂,口燥咽干,口渴欲饮,体瘦,大便偏于,舌红无苔而干,脉细。

治法为()

A.清化湿热,理气和胃

B.疏肝解郁,理气止痛

C.消食导滞,和胃止痛

D.养阴益胃,和中止痛

E.清热化痰,和中止痛

题型:单项选择题

区域发展的不平衡性、发展重点的差别化、发展模式的多样性是区域发展总体战略的出发点,也主要决定了区域发展总体战略的()。

A.短期性

B.稳定性

C.可持续性

D.长期性

更多题库