Class is _____at 11;40 in the morning .

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• 一道寒假作业上的英语阅读题根据短文内容,完成下列句子．One day,Mr.White told the class to get ready for a hobby show.All the students had the whole morning to get what they were goingto show.All the students came back on time except Bob,the laziest boy in his classmates' eyes.It was very difficult to believe that such a boy could have a hobby.But to their surprise,Bob came back with many beautifui stamps in his hand.Mr.White was very happy after watching them.However,Bob was goi
• 一、单选题（共 5 道试题,共 30 分.）V 1.曲线y=x^2+x-2在点(1.5,1.75)处的切线方程为( )A.16x-4y-17=0B.16x+4y-31=0C.2x-8y+11=0D.2x+8y-17=0满分：6 分2.设总收益函数R(Q)=40Q-Q^2,则当Q=15时的边际收益是( )A.0B.10C.25D.375满分：6 分3.如果函数f(x)的定义域为(0,1)则下列函数中,定义域为(-1,0)的为：（）A.f(1-x)B.f(1+x)C.f(sinx)D.f(cosx)满分：6 分4.一枚硬币前后掷两次所出现可能结果的全部所组成的集合,可表示为A.{正面,反面}B.{(正面,正面)、(反面,反面)}C.{(正面,反面)、(反面,正面)}D.{(正面,正面)、(反面,正面)、(正面,反面)、(反面,反面)}满分：6 分5.y=x+arctanx的单调增区间为A.(0,+∞)B.(-∞,+∞)C.(-∞,0)D.(0,1)满分：6 分二、判断题（共 10 道试题,共 70 分
• 把下面的句子改成一般疑问句.1.It is a book._________ ___________a book?2.Iam 11 years old._________ ___________11 years old?3.They are in Class One,Grade Five.__________ __________in Class One,Grade Five?4.Amy's birthday is in August.__________ __________in August?组词成句.1.what doing are you __________________________________ 2.can I speak your Mom to ______________________________________ 3.I drawing am picture a ____________________________________ 4.is he dinner c
• 圆柱形奶桶,底面直径40厘米,高50厘米 容积多少升?已知一升牛奶1.04千克,这个奶桶可装牛奶多少千克?如果把这桶牛奶装在奶瓶里要多少个这样的奶瓶 这个奶瓶高11厘米 直径8厘米
• 11.一个做匀速圆周运动的物体,如果轨道半径不变,转速变为原来的3倍,所需的向心力就比原来的向心力大40 11.一个做匀速圆周运动的物体，如果轨道半径不变，转速变为原来的3倍，所需的向心力就比原来的向心力大40 物体原来的向心力大小为________ .12.从高为5 m的楼上，以 5 m/s的速度水平抛出一个小球，从抛出点到落地点的位移大小是_________________m.(g取10 m/s2,结果保留一位有效数字．)13．倾角为θ的斜面长L，在顶点水平抛出一个小球，小球刚好落在斜面的底端，那么小球的初速度v0 = ______。14．物体从高处被水平抛出后，第3s末的速度方向与水平方向成45°角，那么平抛物体运动的初速度为______m/s，第4s末的速度大小为______m/s。（取g=10m/s2，设 4s末仍在空中）．15。一质量为m的物体，沿半径为R的圆形向下凹的轨道滑行，如图所示，经过最低点的速度为v，物体与轨道之间的滑动摩擦因数为μ，则它在最低点时所受到的摩擦力为______
• 1 2 3 4 5 6 7 8 9 10 11 12 到40 2009排第几行?第几列劳烦在纸上列一下
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• we are very g------that wang ming has made greatprogress.完形填空We are very g 6 that Wang Ming has made greatprogress.He used to b7 late for schoo1 and didn’t 1istento the teachers c 8 in class.After schoo1,he 1iked p 9 computer games and watching TV.He didn’t do his homework So his 1essons were bad.He f 10 in many suects.Li Ping is a good boy.Heisg 11 at his lessons.Hem 12 friends with Wang Ping.He helps him with his 1essons and helps him w 13 out probl
• The _____ (three) class in the morning is Endlish.
• 连词成句:1.Art,students,in,the,an,are,the,having,classroom,lesson.2.can,get,for,flowers,I,some,school,you,after.3.fingers,times,touch,with,your,three,toes,your.4.teacher,have,your,Maths,does,hobbies,any?5.students,all,are,sports,in,hall,the,standing,the.6.can't,get,the,the,with,girl,mouth,flowers,her.