I found out one time that doing a favor for someone could get you Into a lot of1.I was having a final test at the time2the test, the girl sitting next to me 3something, but I didn't understand. So I 4over her way and found out that she was trying to ask me 5 I had an extra pen. I 6to have one,so I took it out and put it on her desk.

    Later, after the test papers had been 7the teacher asked me to stay in the room when all the other students 8As soon as we were alone, she began to talk to me about what it meant to 9up.She talked about how important it was to be 10for my own acts. For a long time, she talked about 11and emphasized(强调)the fact that when people do something dishonest,they are really cheating 12She made me promise that I would think 13 about all the things she had said,and then I could leave.I walked out of the room14why she had talked to me about all those things.

    Later on,I found out that she thought I had15 in the nest.When I leaned over to talk to the girl,it looked as if I was16answers from her test paper.I tried to17about the pen,but it seemed very 18to her that I hadn't talked of anything about it the day she talked to me.19I tried to explain that I was just doing the girl a 20I am sure she continued to believe that I had cheated on the test.

充分利用有限的今天，对于中学生来说，就是应该（   ）
①认真学习，准时到校      ②认真对待今天的的每一节课，每一次活动
③在家庭、学校、社会多做有益的事 ④多做惊天动地的事，“不让一天无惊喜” 

抛物线y=（x﹣1）²+2的对称轴是（　　）

如图所示，将同一个鸡蛋先后放入甲、乙两杯盐水中，鸡蛋在甲杯中处于悬浮状态，在乙杯中处于漂浮状态。则鸡蛋在两杯盐水中受到的浮力   F_甲____ F_乙 ，两杯盐水的密度ρ_甲____ρ_乙 。