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七年级数学第二阶段测试题班级 座号 姓名 评分 一、 填空题(每题3分,共30分)a211、 +1是 次 项式。第二项是 ,其系数是 ;常数项是 ,其次数是 。b2、 直线a和b相交,若1=42,则2= 度。3、 a-b的相反数与a + b的和是 ;204= 。4、 中国的国土面积约为,把我国国土面积,用四舍五入法保留两个有效数字,用科学记数法记为 km。5、 从一副扑克牌中,任意抽取一张,抽到小王的概率是 。B6、 如图(1),已知ABCD,3=2, 1=30,求得4= 度42A7、 全等图形的 和 都相同。38、 三角形的三个角的比是3:2:5,则这三个角的D1C度数分别是 。图19、 如图(2),ABC中,ACB=90,CCDAB于D,若A=30,则211= ,2= ,B DBA10、如图(3),AEBD于C,AB=ED,图2AC=EC,则图中AB与ED的位A置关系是 。DCB二、选择题(每题4分,共24分)图3E1、计算(a+b) (a+b)(ab)的正确结果是( )A、2b(ba) B、2b(b+a) C、2a(ba) D、2a(b+a)BFA12、如图(4),已知CBDF,23则下列结论成立的是( )DCEA、1=2 B、1=3 A图4C、3=2 D、1+2=90FE3、如图(5),在ABC中,BC边上的高是( )DCBA、CE B、CF图5C、AC D、AD4、一位同学不小心把一块三角形的玻璃打破成如图(6)所示的三块,现要去玻璃店重配一块完全一样的玻璃,带图6其中哪块去最省事?( )A、带去 B、带去 C、带去 D、都带去 5、已知三角形的两边长分别为2cm和7cm,并且第三边长为奇数,那么第三边长应为( ) A、8cm B、7 C、6 D、56、一个角的补角是这个角余角的3倍,那这个角的度数为( )A、45 B、55 C、60 D、30三、作图题(6分) 已知:,线段C 求作:ABC,使A=,B=七年级形成性测试题,AB=CC四、计算题(10分)1、(2x3)(x +5) 2、9x (3x 4)+ ( 416)五、解答题(10分)1、 已知A= x + y, B= xy, C= x+ y,求ABC2、 先化简,再求值:(x3)(3+x) + (x3)3x , 其中x = DC六、试一试( 每空1分,共12分, 8分)E1、 如图(7),完成下列推理,并注明合适的理由:(1) (已知)FAE= ( )A即 +EF= +EF图7B = (2) (已知)A= ,AEB= ( )AB ,BE ( )21D图8CBA2、如图(8),已知1=2,B=C,那么AB与AC相等吗?为什么?
考完了六级,大家都一定很想知道到底自己做的对不对,那么今天小编就列出了其中一篇的答案,下面是学习啦小编带来的2014年6级英语匹配题答案,欢迎阅读!
2016年6月英语六级段落匹配真题答案(第一篇)
B
:In this ,you are going to read a with ten to it.Each given in one of the . the from which the is .You may a more than once.Each is with a . the by the on Sheet 2.
Can be rich and green?
[A]“If our are to ,if is to be and if the well-being of the world’s —not just in this but in —we must make sure we take care of the and on which our .”That comes not,as you might ,from a tree-,save-the-world (环保主义者),but from Brown,a with a for , and above all,.
[B]A thing for the man who runs one of the world’s most to say?; in the run-up to the five-year of the (千年的)Goals,he is far from alone.The roots of his ,given in March at the of and from the G20 group of , back to 1972,and the on the Human in .
[C]“The and of the human is a major issue which the well-being of and the world,”read the final from this ,the first of a which would lead to the Rio de Earth in 1992 and the World in three years ago.
[D]Hunt the by UN and —many for such as this year’s Goals —and you will find that the and is a .
[E] is more than them, to the .But hard to the is not so easy. turn first to some sort of ,some which would rate the of in both and terms and show a the two.
[F]If such an ,it is well .And on ,this is not ;the word“”has so many ,and there are so many other —such as the oil —that out a - would be .
[G]The
em ,a vast four-year study which its this year,found to that — with than it—might be less in the short term,but long-term .
[H]And the World (WRI)in its World 2005 , at the end of , such from and Asia;it also that the poor more than the rich,as a much of their from the them.
[I]But there are also many of by the ,in rich and poor parts of the world alike, , water use for ,slash-and-burn ,or -fuel-(大量消耗)。Of ,such may not in the long term—which is what Mr。Brown and the were both to point out。 the best of boom and bust is the Grand Banks 。For five a very large of cod(鳕鱼) raw for an which at its peak about 40,000 , in 。
Then,,the cod 。There were no fish in the sea for the stock to ,let alone an 。More than a later,there was no sign of the re- 。It had,,been out of ;and the once fleet now about for crab on the sea floor。
[J]There is a view that are the seed of a Grand Banks-style .The idea is that we are more out of what you might call the ’s bank than it can ;we are our means.One study to the of this“ of the human ”,and found that we are using 1.2 Earth’s-worth of goods and —the being that at some point the debt will be in,and all those —the which the does for us for free—will grind to a halt.
[K] this is right,and if so where and when the axe will fall,is hard to with any —which is why and are only to bring such risks into their .It is also the why are not in their view of ;while some,like the WRI, that needs to go hand-in-hand with , argue that the is to build a ,and then use the to .
[L]This view that rich will in care.But is this right?Do get or worse as we get ? Here the is .“In the ,”it says,“most of the are by under-.”So it is that make for a world?Not ;“In the , are to and ,”it .In other words,poor and rich both over- the world,but for .It’s not true that will make our world .
[M], are able to which lie well the reach of . of parks,clean ,clean air and -free food.They also,,use far more -fuel,water(all those baths and golf )and .
[N]A case can be made that rich ,the most being .As a ’s grows,so do its gas .The will not be . is not a , when it comes to land use;not all have re- up-to-date data,and in any case, from some such as are not in .But the data is exact for a clear trend to be .As ,they more gases;and the of those gases will fall in poor parts of the world.
[O] is not,of ,the only .The is off than the US ,but about half as much to .But could keep its of and yet cut its to or even ?That , a dozen and our ,is what will the human race is its means as it .
36. show that both rich and poor the for .
37. and all over the world.
38.It is not true that will make our world .
39.The theme of the UN is the and .
40. how to while .
41.It is to find solid to prove more than the .
42. of will prove in the long run.
43.A noted for being that human on the .
44.Poor will have to bear the cost for rich ’ .
45.One study warns us of the of the of on Earth.
参考答案
36. 正确选项 I
37. 正确选项 C
38. 正确选项 L
39. 正确选项 D
40. 正确选项 K
41. 正确选项 E
42. 正确选项 G
43. 正确选项 A
44. 正确选项 N
45. 正确选项 J
例谈几何概型的计算几何概型是将古典概型的有限性推广到无限性,而保留等可能性的一种求概率的方法.它是借助测度来表示样本区域与所考察的样本.几何概型的计算一般按下列步骤进行:(1)选取合适的模型,即样本区域D;(2)在坐标系中正确表示D与所求概率事件A所在的区域d;(3)计算D的概率.分析:解决本题的关键是如何将其归结为一个几何概型,设x,y分别表示随机所取的两个数,则由题意知x,y均等可能地在(0,1)中取值,从而(x,y)等可能地在平面区域分别表示从(0,1)中取出的两个数,则样本区域甲、乙两人相约于下午1:00~2:00之间到某车站乘公共汽车外出,他们到达车站的时间是随机的,设在1:00~2:00之间有四班客车开出,开车时间分别是1:15,1:30几何概型时间问题,1:45,2:00,分别求他们在下述情况下同坐一班车的概率.(1)约定见车就乘;(2)约定最多等一班车.分析:本题是几何概型中的典型例题——约会问题的变形.分别作出表示事件的所在区域,利用构造思想及数形结合思想,结合几何概型知识加以解决.解:设甲、乙到站时间分别是x试验区域D为点(x,y)所形成的正方形,以16个小方格表示,如图2所示.(1)如图3,约定见车就乘的事件所表示的区域d为图中4个黑的小方格所示,所求概率(2)如图4,约定最多等一班车的事件所表示的区域d为图中10个黑的小方格所示,所求概率为内掷一点,点落在半圆内任何区域的概率均与该区域的面积成正比,求该点与原点连线与x轴的夹角小于的概率.分析:题目中“随机地”即表示试验结果的等可能性,“点落在半圆内任何区域的概率均与该区域的面积成正比”更强调试验的等可能性,因为试验结果是无限个,因此容易想到用几何概型来计算.解:如图5,设事件A表示“点与原点连线与x轴的夹角小于的概率”.即为图5中的半圆,其面积为
心理测试是一种比较先进的测试方法,它是指通过一系列手段,将人的某些心理特征数量化,来衡量个体心理因素水平和个体心理差异差异的一种科学测量方法。下面是小编整理的心理小测试题目及答案,希望对你有帮助!
1.心理测试题目:压抑
公交车上,邻坐睡着的人把头靠在你肩上,你会怎么办?
A 忍耐 B 用肩膀推回去 C 离开座位
D 不会觉得不快也不加以理睬
选择A:受到外来攻击却内心忍耐的被动性格,压抑度相当高
选择B:虽会反抗但并不能活动成功,仍是无法摆脱压抑的消极性格。
选择C:为了排解压抑,采取逃避的态度,但是到达极限时,便只有
退缩而束手无策。
选择D:并不会去排除压抑,也不会逃避,但事实上仍难以摆脱压抑
的影响。
2.心理测试题目:焦虑
设想自己走到一个房子面前,然后你推开门,会看到什么?可以多选。
A 床 B 窗户 C 电器 D 家具 E 装饰画
选择A:床代表休息。可能是最近过多的工作,让你的身体有些负担
不了,也可能是最近你在健康方面出了一下小问题。你需要一段时间的休息和整理来把身体调养到最后状态,否则身体过度负荷,也会造成情绪上的低落。
选择B:窗户代表情感。你在情感上可能遇到了一下彷徨和不安。试着在一张纸上小升初心理测试题,写下自己在情感上面的焦虑,这会让你的'心情平静很多。
选择C:电器代表娱乐。工作太忙了,这让你缺少了必要的娱乐,可
能连自己的业余爱好也变得少了。工作之余适当放松一下可能会使你的工作更有效率。
选择D:家具代表金钱。你最近在经济上可能出现了一定的困扰,但
是如果事情真的很难解决,试着和值得信赖的朋友商量一下吧。
选择E:装饰画代表外貌。也许你觉得自己应该换一个新的发型。如
果想试试新的形象,就去做吧,不用太介意别人对你的意见。
如果多选,那么你所看到东西的排列顺序代表了你所受到的焦虑的
强烈程度,排位越靠前,焦虑越强烈。
3.心理测试题目:紧张
这是一个5岁小女孩的梦:小女孩的母亲牵着小女孩的手走着但就在女孩采摘路旁盛开的蒲公英时,母亲却逐渐越走越远。女孩急急忙忙想追上母亲,但不知道为什么双脚却不听使唤,于是女孩大声叫:“妈妈!”你认为在梦中的这位母亲有什么反映呢? 紧张
A.没注意到小女孩的叫声,继续愈走愈远。
B.立刻回头,跑到小女孩的身边,抚摸她的头。
C.停下脚步,并回头向小女孩挥手,示意她“快点儿过来”。
选项A.倾向广场恐惧症。在潜意识里对分离感到不安。或许你的幼
年期断奶比较迟,导致对于离开心爱的东西会感到恐惧,因此,一旦臵身于空旷的地方,便会产生强烈的孤独和不安。
选项B.有密室恐惧症的倾向。在幼年时期可能受到过母亲过分的保
护,因此相对地却丧失了主体性,心理上感到不安,害怕完全被母亲控制。这种窒息感便以密室恐惧的形态出现。
选项C.属于正常的人。和母亲之间有适当的距离。表示从幼年期开
始便和双亲之间维持着稳定的心理关系。换句话说,至少你对空间不会感到恐惧。
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与考生自由互动、与资深老师进行交流、解答