问题 单项选择题

在跳汰选煤过程中,对于相同原料煤,可采取增大用水量的方法来增大()值,从而增大干扰沉降速度。

A、容积浓度

B、松散系数

C、浓度系数

D、松散浓度

答案

参考答案:B

完形填空
Even though it was only October, my students were already whispering about Christmas plans. With each passing day everyone became more  31  waiting for the final school bell. Upon its   32  everyone would run for their coats and go home, everyone except David
David was a small boy in ragged clothes. I had often  33 what kind of home life David had, and what kind of mother could send her son to school dressed so 34 for the cold winter months, without a coat, boots, or gloves. But something made David   35  . I can still remember he was always  36 a smile and willing to help. He always  37 after school to straighten chairs and mop the floor. We never talked much. He  38  just smile and ask what else he could do ,then thank me for letting him stay and slowly  39 home.
Weeks passed and the  40  over the coming Christmas grew into restlessness until the last day of  41 before the holiday break. I smiled in  42  as the last of them hurried out the door. Turning around I saw David 43 standing by my desk.  
“I have something for you” he said and   44 from behind his back a small box.  45   it to me, he said anxiously, “Open it. ”I took the box from him, thanked him and slowly unwrapped it. I lifted the lid and to my 46  saw nothing. I looked at David’s smiling face and back into the box and said. “The box is nice, David, but it’ s  47 .
“ Oh no it isn’t ,” said David “ It’s full of love, my mum told me before she died that love was something you couldn’t see or touch unless you know it’s there .”
Tears filled my eyes  48  Ilooked at the proud dirty face that I had rarely given  49  to. After that Christmas, David and I became good friends and I never forgot the meaning 50 the little empty box set on my desk.      
小题1:
A.courageous B.anxiousC.seriousD.cautious
小题2:
A.warningB.callingC.ringingD.yelling
小题3:
A.scoldedB.wonderedC.realizedD.learned
小题4:
A.modestlyB.naturallyC.inappropriatelyD.inaccurately
小题5:
A.popularB.specialC.upsetD.funny
小题6:
A.expressingB.deliveringC.sharingD.wearing
小题7:
A.practicedB.wanderedC.stayedD.studied
小题8:
A.wouldB.shouldC.mightD.could
小题9:
A.aim atB.head forC.put offD.turn to
小题10:
A.excitementB.argumentC.movement D.judgement
小题11:
A.yearB.schoolC.education D.program
小题12:
A.vainB.returnC.reliefD.control
小题13:
A.quietlyB.sadlyC.weaklyD.helplessly
小题14:
A.searchedB.foundC.raisedD.pulled
小题15:
A.HoldingB.SendingC.HandingD.Leaving
小题16:
A.delightB.expectationC.appreciationD.surprise
小题17:
A.emptyB.cheapC.uselessD.improper
小题18:
A.asB.untilC.becauseD.though
小题19:
A.adviceB.supportC.commandD.attention
小题20:
A.fromB.behindC.overD.towards
单项选择题