问题 单项选择题

刚形成尚未钙化的牙本质是

A.小管周牙本质

B.小管间牙本质

C.小球间牙本质

D.前期牙本质

E.骨样牙本质

答案

参考答案:D

单项选择题 A1型题
完形填空
I used to live selfishly, I should admit. But one moment changed me.
I was on my lunch break and had  41  the office to get something to eat . On the way, I  42 a busker (街头艺人),with a hat in front of him. I had some  43 in my pocket, but I would not give them to him, thinking to myself he would  44  use the money to feed his addiction to drugs or alcohol. He  45  like that type---young and ragged.  46  what was I going to spend the money on ? Only to feed my addiction to Coca-Cola or chocolate! I then  47  I had no right to place myself above  48  just because he was busking.
I  49  and dropped all the coins into his  50 , and he smiled at me. I watched for a while. As  51  as it sounds, I expected something more to come from that moment—a feeling of  52  or satisfaction, for example. But nothing happened.  53 , I walked off. “It proved to be a waste of  54  ,” I thought.
On my way home at the end of the  55 , I saw the busker again and he was _56 . I watched him pick up the hat and walk  57 a cafe counter. There he poured the  58  contents into a tin collecting  59  an earthquake fund-raising (募捐) event. He was busking for charity!
Now I donate any  60  I have to charity tins and enjoy the feeling of giving.
小题1:
A.leftB.cleanedC.preparedD.searched
小题2:
A.ledB.choseC.sawD.fooled
小题3:
A.chocolatesB.coinsC.tinsD.drugs
小题4:
A.almostB.onlyC.ratherD.still
小题5:
A.actedB.lookedC.soundedD.smelt
小题6:
A.ThoughB.ForC.ThereforeD.But
小题7:
A.declaredB.realized C.expectedD.guessed
小题8:
A.itB.allC.himD.them
小题9:
A.waitedB.followedC.stoppedD.arrived
小题10:
A.ragB.hatC.pocketD.counter
小题11:
A.selfishB.awkwardC.innocentD.special
小题12:
A.happinessB.sadnessC.loveD.hate
小题13:
A.DisappointedlyB.UnfortunatelyC.CoincidentallyD.Comfortably
小题14:
A.wordsB.effortC.spaceD.money
小题15:
A.momentB.dayC.breakD.event
小题16:
A.walking aroundB.passing byC.packing upD.running off
小题17:
A.aroundB.inC.behindD.to
小题18:
A.chiefB.basicC.actualD.total
小题19:
A.byB.forC.onD.with
小题20:
A.workB.timeC.energyD.change