下列气体中不能用NaOH固体干燥的是 [ ] A.CO B.H2 C.CO2 D

题型:选择题

问题:

下列气体中不能用NaOH固体干燥的是 [ ]

A.CO          

B.H          

C.CO2         

D.O2

考点:碱的用途
题型:选择题
" Wanted: A violin. Can’t pay much. Call…"
The ad in the newspaper made me remember my childhood. Because my family was  36 , I couldn’t have a violin. So I asked, "Daddy, may I have a   37 ?" Daddy’s face looked sad. But a few weeks later, Daddy went home with a case in his hand. Inside the case was a second—hand violin for seven dollars.
No one could know how   38  I was when I took my violin to school for my first lesson. Several years later, I became famous as a violinist. And then, I carefully   39 the violin away.
Now   40  this ad, I discovered the case deep in my closet(储藏室). I put it on the table. Then I picked up the   41  , walked to the telephone and called the number.
Later in the day, a man aged about 30 knocked at the door. "I’ve been expecting
someone can answer my advertisement.  My daughter wants a violin so   42  ," he said, examining my violin. "How much is it?"
I said, "   43 dollars. "
"Are you surer" he asked. "Seven dollars," I  44  and then added, "I hope your daughter will be   45  to have it and enjoy it as I did. "
I smiled, but I found my tears roiling down my face.
小题1:
A.richB.poorC.largeD.small
小题2:
A.drumB.guitarC.violinD.piano
小题3:
A.surprisedB.excitedC.boredD.interested
小题4:
A.carriedB.putC.tookD.threw
小题5:
A.aboutB.byC.inD.for
小题6:
A.adB.violinC.caseD.newspaper
小题7:
A.badlyB.easilyC.quicklyD.luckily
小题8:
A.NinetyB.TwentyC.SevenD.Five
小题9:
A.repeatedB.showedC.remindedD.suggested
小题10:
A.cleverB.sadC.afraidD.happy
题型:选择题

在我国大城市,发病率和死亡率最高的肿瘤是()。

A.肝癌

B.食管癌

C.肺癌

D.胃癌

E.鼻咽癌

题型:选择题

通过集体讨论,使思维相互撞击,迸发火花,达到集思广益的效果。这是( )

A.发散思维训练

B.推测与假设训练

C.自我设计训练

D.头脑风暴训练

题型:选择题

DDT对哺乳动物的急性毒性主要表现为()中毒。

A、循环系统

B、消化系统

C、淋巴系统

D、中枢神经系统

题型:选择题

地层对比时要先在测井曲线上找出宏观相似段,再进行大段对比卡出深度。()

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