问题 问答题 简答题

物质系统的类型?

答案

参考答案:

①从系统与环境的关系分析,自然界中的系统分为:孤立系统、封闭系统、开放系统。

②从系统内发生的实际过程分析,自然界的系统分为:物理系统、化学系统、生命系统。

③从人对自然物的参与程度分析,自然界中的系统分为:天然系统、人工系统、复合系统。

④从系统内各要素相互作用的特点分析,自然界的系统分为:线性系统、非线性系统。

⑤从人对自然的认识程度分析,自然界的系统分为:黑系统、白系统、灰系统。

⑥从系统所处的状态分析,系统分为:处于平衡态系统、处于 * * 衡态系统、远离平衡态的系统。

填空题
完形填空
It was the beginning of a new term. As a(n)   36  teacher in that school, I didn’t know any of the students. A little girl was   37  at the gate of the classroom. She looked very   38 .
I walked up to her and asked   39  she stood there. But she said   40 . Instead, a boy shouted, “She is from Grade Four, the   41  student in her grade.” I looked at the little girl, who didn’t seem to be the smart kind. I   42  why her teacher asked her to stay in Grade Three. I took her hand and   43  her into the classroom.
“Sit here. Now you are my student and I’m your teacher,” I said. She   44  said nothing, but she burst into tears.
I later learnt that her parents   45  in a car accident, and she had   46  talking to others since then. She learnt very   47 . I gave her respect and never   48  her as I know everybody deserves (值得) respect. I   49  her after school, and she was making   50  little by little. I encouraged her and as   51  went by, she was not as shy as before. At the end of the term, she seemed to have forgotten all her   52 . She was not one of the best students when she left that school,   53  at least, she was not that shy and sad little girl any longer.
In the following   54 , she would send me a card on each Thanksgiving Day. Three days ago, I received a(n)   55  to her wedding. And now, I am at her wedding, and she is smiling brightly.
Everyone deserves respect and everyone can be happy!
小题1:
A.oldB.newC.goodD.famous
小题2:
A.smilingB.sittingC.standingD.crying
小题3:
A.tallB.shyC.beautifulD.kind
小题4:
A.ifB.whenC.whyD.how
小题5:
A.somethingB.anythingC.nothingD.everything
小题6:
A.worstB.shortestC.ugliestD.smartest
小题7:
A.rememberedB.thoughtC.askedD.understood
小题8:
A.threwB.pushedC.pulledD.led
小题9:
A.firstlyB.stillC.surprisinglyD.finally
小题10:
A.foughtB.disappearedC.metD.died
小题11:
A.keptB.stoppedC.advisedD.forgot
小题12:
A.fastB.widelyC.slowlyD.quietly
小题13:
A.played jokes withB.thought highly ofC.took care ofD.looked down upon
小题14:
A.helpedB.servedC.choseD.pleased
小题15:
A.progressB.happinessC.marksD.surprises
小题16:
A.dreamsB.effortsC.energyD.time
小题17:
A.joyB.sadnessC.pastD.anger
小题18:
A.sinceB.becauseC.soD.but
小题19:
A.hoursB.yearsC.monthsD.days
小题20:
A.invitation B.cardC.keyD.letter