问题
填空题
重力的施力物体是______；重力的大小跟质量成______比．
答案
地球附近的一切物体都会受到地球的吸引力，由于地球吸引而使物体受到的力叫重力，由重力定义可知，重力的施力物体是地球；
物体的质量越大，重力越大．实验表明，物体受到的重力大小跟物体的质量成正比．
故答案为 地球；正．
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重力的施力物体是______；重力的大小跟质量成______比．
地球附近的一切物体都会受到地球的吸引力，由于地球吸引而使物体受到的力叫重力，由重力定义可知，重力的施力物体是地球；
物体的质量越大，重力越大．实验表明，物体受到的重力大小跟物体的质量成正比．
故答案为 地球；正．
One day, my English teacher asked me to help her save back-up（备份） copies of her work in the computer. I then realized I was able to know the grades of all of her students. I 36 her how to copy files（文件） from one disk to another and she thanked me. A few days later, she asked me to help her again, because she 37 how to do it. When I showed it to her, some students in my class 38 and began to talk among themselves 39 .Later that day, at lunch time, several of them came up to me. “Hey, could you help us change our grades? We’ll 40 for it.” I could not believe what I heard. I could get paid for something very 41 . “All right. I’ll do it.” The next day, my English teacher 42 me to help him out again. When he was not paying 43 , I changed their grades from Fs to As. I soon became very 44 among my friends. They began to treat me like God who could do 45 . Word spread quickly and I became very rich. Everything was going fine 46 I was called into the headmaster’s office. When I got there, both of my teacher and the headmaster were very angry. “ I don’t want to 47 what your teacher said, but I have to. She has too much evidence(证据),’’ the headmaster said. “Do you have anything to say for yourself?” “No,” I said finally. I didn’t realize how 48 my behavior had been. I had disappointed my teacher and the headmaster. And there was no way 49 . I had to leave my school. That was a good 50 for me.
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