人类很早就发现,孔雀石的熊熊燃烧的森林大火中,树木的余烬里会有一种红色光亮的金属

题型:填空题

问题:

人类很早就发现,孔雀石的熊熊燃烧的森林大火中,树木的余烬里会有一种红色光亮的金属凝固出来,试用化学方程式表示所发生的反应.〔孔雀石主要成分为Cu2(OH)2CO3

(1)_________;(2)_________

考点:化学反应方程式的书写
题型:填空题

While I was waiting to go into university, I saw in a newspaper a teaching job wanted at a school about ten miles from where I   16 . Because I was in great need of   17  and wanted to do something useful, I applied(申请).
Three days later, a letter   18 . It asked me to see the   19  at Croydon. It proved to be a(n)   20  journey —a train to Croydon station, a ten-minute bus ride and then a walk of   21  a quarter of a mile. As a result I arrived there, feeling too hot to be nervous. Clearly, the principal   22  opened the door. He was   23  and round.
“The school” he said, “has a group of twenty-four boys between seven and thirteen.”
I should have to teach all the   24  except art, which he taught himself. I should have to divide the class into  25  groups and teach them at three different   26 , and I was not    27  at the thought of teaching maths —a subject which I didn’t do very well in at school. It was   28  that I had to teach them on Saturday afternoon   29  most of my friends would be   30  themselves at that time.
Before I had time to ask about my salary(薪水), he got up to his feet. “Now,” he said. “you’d better meet my wife. She is the one who really runs this school.”
小题1:
A.livedB.playedC.studiedD.worked
小题2:
A.helpB.moneyC.restD.force
小题3:
A.arrivedB.receivedC.returnedD.wrote
小题4:
A.editorB.teacherC.principalD.student
小题5:
A.comfortableB.easyC.short D.unpleasant
小题6:
A.at leastB.at firstC.at lastD.at most
小题7:
A.herselfB.themselvesC.itselfD.himself
小题8:
A.badB.gladC.shortD.smiling
小题9:
A.peopleB.subjectsC.boysD.knowledge
小题10:
A.twoB.threeC.fourD.five
小题11:
A.subjectsB.lessonsC.levelsD.schools
小题12:
A.gladB.surprisedC.angryD.sad
小题13:
A.betterB.more excitingC.worseD.nicer
小题14:
A.untilB.afterC.ifD.because
小题15:
A.enjoyingB.helpingC.studyingD.arguing
题型:填空题

Tom ought not to ________ me your secret, but he meant no harm.

A.have told

B.tell

C.be telling

D.having told

题型:填空题

根据GB8702-88《电磁辐射防护规定》的要求,当震荡频率大于100Hz时需采取防护措施。

题型:填空题

某公司2011年初发行在外普通股2500万股,2011年4月1日新发行500万股,11月1日回购120万股,2011年实现净利润1600万元,则基本每股收益为()元。

A.0.45 

B.0.56 

C.0.75 

D.0.85

题型:填空题

链传动中,小链轮的齿数不应小于()。

A、9

B、8

C、10

D、6

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