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一个等腰三角形的周长为10cm ,腰长为xcm ,底边长为ycm,则y与 x的函数关系式和自变量的取值范围为(      )。
A.B.
C.D.

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下列图形中,表示一次函数y =" mx" + n与正比例函数y = mnx(m、n为常数,且mn≠0)的图象的是 (    )

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、已知正三角形ABC的边长为2,以BC 的中点为原点,BC所在的直线为x轴,则点A的坐标为(       )
A.B.C.D.

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、坐标轴上点            任何象限。

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科目: 来源: 题型:

n边形的内角和为              ,多边形的外角和等于                     

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表示函数关系的方法有                                        。             

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若A(a1,b1) ,B(a2,b2)在平行于 x轴的直线上,则b1                           b2

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、已知点M(3,—2),将它先向左平移4个单位,再向上平移3个单位后得到N,则点N的坐标为               

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科目: 来源: 题型:阅读理解

完形填空 (20分)
The famous British inventor George Stephenson was born in 1781 and died in 1848. one of his _21_ important inventions was the train. He _22_his first train when he was forty-four years old. When he was experimenting with the _23_ engine on the train, he met with _24_ from the government, newspapers and the gentlemen in the country. They said that the noise and the smoke would _25_ cows, horses and sheep, that the _26_ would hurtle(炸飞) or that the hot coals from it would _27_their houses. At that time, _28_ people believed what they said.
George Stephenson _29_ the people that the train could go on small _30_, could pull carriages _31_goods and passengers and there was _32_ to them. It was a very _33_ matter for him to _34_ them believe. However, after _35_, he was able to do it; and the first train that _36_ by Stephenson himself _37_ what he had said.
The first day _38_ the people along the way _39_ the noises of the train _40_ and saw it running quickly to them, they ran back home as quickly as they could and closed their doors tightly, for they thought it a genius. They did not dare to come out until it had passed.
【小题1】
A.veryB.a lotC.mostD.much
【小题2】made   B. bought   C. introduced   D. did
【小题3】
A.electricalB.atomicC.steamD.beautiful
【小题4】
A.successB.troublesC.peopleD.pleasure
【小题5】
A.killB.buyC.interestD.take away
【小题6】
A.smokeB.noiseC.driverD.engine
【小题7】
A.pull downB.blow awayC.set fire toD.pass
【小题8】
A.mostB.fewC.only a fewD.the rich
【小题9】
A.saidB.spokeC.toldD.warned
【小题10】 A.reads    B. rivers    C. steam    D rails
【小题11】
A.short ofB.full ofC.empty ofD.without
【小题12】
A.no great dangerB.dangerousC.a lot of dangerD.few danger
【小题13】
A.easyB.difficultC.pleasantD.light
【小题14】
A.getB.causeC.makeD.force
【小题15】
A.sometimesB.some timeC.a few timesD.sometime
【小题16】
A.was soldB.were drivenC.was pulledD.was driven
【小题17】
A.believedB.seemedC.sensedD.proved
【小题18】
A.ofB.whenC.whileD.for
【小题19】
A.caught sight ofB.listened toC.heardD.thought
【小题20】
A.nearbyB.in the distanceC.on the farD.from the distance

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、点P 到x轴的距离为3,到y轴的距离为2,则点P的坐标为                                    
                      。            

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