问题 改错题

短文改错

In my school six students punished for cheating in the mid-terms, but                                 1._____       

this didn't stop some students from doing the same thing. In one day's                                2._____      

exams, on my way to home I heard some students talking with each other. "I                     3._____       

was too worried that I sent a message to everyone I know to ask the answers                   4._____        

of the questions on the politics exam paper." It's clear that many students                           5._____       

cheated. This six unlucky students became the "killed chickens", but the                             6._____       

"monkeys" were not frightened at all. More and more student start cheating                       7._____      

in school exams. That must be how so many students do well in the exams                         8._____       

at their own school, and fail in the college entrance examinations. I do hope                       9._____          

that useful measures could be taken stop cheating in exams.                                             10._____

答案

1. punished 前加were   2. In→After     3. 去掉to       4. too→so          5. of→to

6. This→These             7. student→students               8. how→why      9. and→but       10. stop前加to  

填空题

甲、乙两个物理实验小组分别探究“弹力和弹簧伸长的关系”.

(1)甲组同学利用图(a)所示的装置,将弹簧的上端与刻度尺的零刻度对齐,读出不挂钩码时弹簧下端指针所指刻度尺的刻度值,然后在弹簧下端钩上钩码,并逐个增加钩码,依次读出指针所指刻度尺的刻度值,所读数据列表如下:(弹簧始终未超过弹性限度,重力加速度g取9.8m/s2

123456
钩码质量m/g0306090120150
刻度尺读数x/cm6.008.349.4810.6411.79
①实验中挂30g钩码时刻度尺的读数如图,请你将这个测量值填入记录表中.

②该小组根据所测数据,在图(b)中的坐标纸建立x-m坐标系,并描出5组测量数据,请你将第2组数据描在坐标纸上,并画出x-m的关系图线.

③作出的图线与坐标系纵轴有一截距,其的物理意义是______;该弹簧的劲度系数k=______N/m(结果保留3位有效数字).

(2)乙组同学利用图(c)所示的装置,用与甲组同样规格的弹簧做实验,他们将弹簧左端与刻度尺的零刻度对齐,读出不挂钩码时弹簧下端指针所指刻度尺的刻度值,然后通过定滑轮在弹簧另一端的细绳上钩上钩码,并逐个增加钩码,依次读出指针所指刻度尺的刻度值.之后他们经历了与甲组同样的实验步骤.最后甲、乙两组将测出的劲度系数进行比对,发现乙组的测量结果总比甲组的测量结果稍大一些,其原因是______,这种误差叫______(填“系统误差”或“偶然误差”).

判断题