某班一些学生作图钉随机抛掷的实验,求图钉尖触地还是图钉面触地的概率,下列做法正确

题型:选择题

问题:

某班一些学生作图钉随机抛掷的实验,求图钉尖触地还是图钉面触地的概率,下列做法正确的是(  )

A.甲做了4000次,得出针尖触地的频率约为42%,于是他断定在做第4001次时,针尖肯定不会触地

B.乙认为一次一次做,速度太慢,他拿来了大把材料,形状及大小都完全一样的图钉,随意朝上轻轻抛出,然后统计针尖触地的个数,这样大大提高了速度

C.老师安排每位同学回家做实验,各人的图钉大小、质地均匀程度都不一样,同学交来的结果,老师进行统计

D.老师安排同学回家做实验,图钉统一发(完全一样的图钉),同学交来的结果,老师进行统计

考点:概率的意义随机事件必然事件列举法求概率
题型:选择题

People say teenagers are no good. They make too much noise in shopping malls; they drive recklessly(不顾一切地) up and down America’s main streets; they carry chips on their shoulders as big as the Sears Tower. And at least some of the time those things are true. But we shouldn’t forget that there are hard moments in the life of a teenager too.

I watched such a moment not long ago at a woman’s funeral. I didn’t expect the event to affect me. Through much of the ceremony, in fact, I remained unmoved.

The teenage grandson stepped forward. With his very first deep breath, every heart in that church was achingly reminded of something we had all forgotten. Softly he began: “I want to share a few values that Nana taught me. She never failed to see light in any situation. When our family dog would truely attract her, what would Nana say? ‘oh, what beautiful barking that dog has!’ That was Nana. ”

“She was a strong woman who often lived in the shadow of my grandpa, who was a successful businessman in this city. But she was the one behind the scenes who provided the strength and support for my grandpa’s career,” he said, with a voice now trembling, “That was Nana’s way.”

Through a low sob, he continued, “Whenever she did anything worth recognition, you’d have to hear about it from a different source, because she was never one to show off.”

Finally, in a voice breaking free of sorrow, he looked up and said, “Nana taught me courage. She put up an incredible fight to the end, when she died peacefully, which is how she lived her life. That was Nana’s way, and I hope I can carry on in the same manner.”

There are no hearts as sensitive as those of teenagers, because everything is happening to them for the first time. The trouble with teenagers is that they haven’t learned to be controlled.

When that boy rose to speak about the woman who surely had been his truest and dearest friend, his honest voice dragged each of us out into the open where we could no longer hide in the calm ceremony . He exposed us to the truth about this very real woman who believed in a boy who probably tried the patience of many adults. He reminded us that his grandmother was more than another dot on the chart of life and death.

All over again we felt those powerful losses crossing our own hearts, and we knew that when you say good-bye to something happy, something young in yourself. And that something never really returns, and the pain never really goes away.

小题1:In the first paragraph, the writer gave some examples to_____.

A.support his idea that young people are no good.

B.introduce his point of view about young people.

C.tell people every coin has its two sides.

D.young people often make mistakes.小题2: From the boy’s speech, we know _____.

A.his grandmother had great influence on him.

B.they had a dog which often attacked people

C.people had forgotten her until the boy appeared..

D.his grandmother was so weak that she is always living in the shadow of his grandpa小题3: Which of the following statements is true?

A.The boy ‘s speech moved no one present at the funeral except the writer.

B.The boy’s being good at expressing himself enabled him to draw everyone’s attention.

C.The boy was too grievedto accept the fact that his grandmother had passed away.

D.The writer didn’t expect the event would affect him.小题4:What words can best describe grandmother’s quality?

A. weak, mild and modest.

B.. easygoing, cautious and considerate

C. sensitive and hard on others.

D, patient, optimistic, strong and helpful.

小题5:The passage tells the readers____.

A.facing certain bitter facts help young people to grow.

B.young people have to control themselves

C.the adults should learn from the young.

D.the adults should teach the young how to be brave

题型:选择题

风险投资的特点是()。

A.投资创新企业

B.预期回报率低

C.收益来自企业分红

D.风险低

题型:选择题

【案例二】:

一般资料:求助者,女性,33岁,公司职员。

案例介绍:求助者结婚十年,因病一直没有生育。丈夫以前对有没有孩子无所谓,现在又改变了态度,说很想有自己的孩子。随年龄的增大求助者的压力很大,担心夫妻感情受到影响。四个月前发现丈夫网恋,为这事和丈夫吵过好多次,接受不了这个现实,很痛苦,主动前来咨询。

下面是心理咨询师与求助者的一段咨询对话:

心理咨询师:你需要我帮你解决什么心理问题呢?

求助者:我现在不知道该怎么办,这种事情也不是对谁都能说的,你能告诉我该怎么办吗?

心理咨询师:你想怎么办呢?

求助者:我不知道,所以来咨询。

心理咨询师:那你现在想想可以吗?

求助者:我想了,但我想不出来。

心理咨询师:那你能详细说说你都想了什么吗?

求助者:他和我结婚的时候一无所有,我为婚姻付出了太多,我父母为我们买了房子,他们自己还住在老房子里。我因病不能生育,无法满足丈夫要孩子的需求。现在丈夫网恋。还不听我的劝阻,让我非常痛苦,对未来缺乏信心。朋友劝我,男人都这样,离婚不一定就好,还会有很多新的矛盾,还是原配的好。我真不知道怎么办才好,我现在都快崩溃了,觉得活着一点意思都没有,我吃不下、睡不着,工作也没精打采,什么事也不想干。我今天来就是想让你告诉

诉我到底该怎么办?

心理咨询师:我很理解你的痛苦,你现在是对离不离婚无法决断,对吗?

求助者:是的,我如果选择不离婚,可我为什么要宽容他呢?是他犯的错误。唉,如果离婚,我又害怕过得还不如现在。

心理咨询师:你目前的婚姻,就像住在一座危房里,你怎么办?

求助者:(沉默)危房?我可以加固、改造,还可以就这么忍着,或者搬走。

心理咨询师:是的,那你作何选择?

求助者:我,我可能会根据哪个有利选哪个。

心理咨询师:对于你刚才的坦率,我很高兴。

求助者:(点点头)

心理咨询师:你现在的冲突,就是因为有好几种选择,每种选择各有利弊,你不是不知道怎么做,你是选择哪个都只要它的利,不要它的弊,是吗?

求助者:好像是这样了,我明白了,您的意思是说我什么都想得到?

心理咨询师:你觉得呢?理性的做法是:接纳我们不能改变的,改变我们可以改变的。

求助者:我懂了,我知道该怎么办了,……您为我解决了一个大难题,以后您就是我的知

心朋友了,有什么想不明白的问题我就给您打电话。

心理咨询师:好吧,我的电话号码是……

心理咨询师告诉求助者电话号码,出现的失误是()。

A.没有避免双重关系

B.违背保密原则

C.违背自我保护原则

D.违背价值中立原则

题型:选择题

采掘工作面必须实行湿式钻眼。

题型:选择题

质量是国际单位制的(),压力、压强、应力是包括SI辅助单位在内的具有专门名称的SI(),体积是我国选定的可以与国际单位制单位并用的()。

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