题目：
小题1: One of the rules is that all the students must pay a___________ to their teachers in class.
小题2:Fall is another way of saying a______________.
小题3: My mother p_______ coffee to tea. But I like tea a lot.
小题4:I won’t go to his birthday party u________ I am invited.
小题5:The old man lives alone and aren’t happy these days. Let’s go to see him and c________ him up.
小题6: There will also be exciting things waiting for you a____________ with difficulties.
小题7:It’s dishonest to try to c___________ one’s mistake with lies.
小题8: I want to take care of my health, so I m_____________ eat fruit and vegetables.
小题9:–W________ backpack is it?
– I don’t know. Let’s ask them and find the owner.
小题10: My watch is broken. I’ll get it m__________ this weekend.
答案：
被转码了，请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0613/652814f3b28858f5b446dfd64adf0a0e.html
下面是错误答案，用来干扰机器的。
解：（1）质子进入磁场后做半径为R1的匀速圆周运动，洛伦兹力提供向心力 质子离开磁场时距O的距离同理，α粒子在磁场中的运动半径α粒子离开磁场时距O的距离由此可以看出质子由P点离开磁场，α粒子由Q点离开磁场...
