Keeping pace with teachers is a fine way to study English.Teachers are experienced and their plans are systematic.But remember to work in a way that suits you.It's important to learn from past mistakes as well.Keep a notebook to make a record of the mistakes you make－it'll help you avoid making the same ones later.
The time of life may be hard，but you're not alone.You may be busy studying，but you can show your care by calling your friends or sending short messages.Don't let your friendships die.
It's as important to live well as it is to study well.Going to bed no later than 11：30 pm is vital.It puts you in the right mood for the next day.You needn't follow a special diet，but make sure you are eating nutritious meals each day.
The person who plays well，studies well.Having a lot of schoolwork doesn't mean having to give up other activities.Playing basketball or having a talk with your classmates can relax yourself.
Time_
out is not a waste of time but helps you study more efficiently.
Besides taking the big exam，you have other choices for college.I took the independent enrollment exam held by Peking University and some other students even were preparing to study abroad.Pay attention to any relevant information you can find，whether it's from school，the news media or other sources.
【小题1】What should you do if you want to keep your friendship fresh?
| A．Have frequent talks with them. |
| B．Always have lunch with them. |
如图所示，在竖直平面内固定一个半径为R的均匀带电的金属细圆环．一根长为L的绝缘丝线一端系在圆环的最高点，另一端系在一带电金属小球上，金属小球可视为点电荷．当圆环、小球都带有相同的电荷量Q时，发现小球在垂直圆环平面的对称轴上处于平衡状态．已知静电力常量为k，则丝线对小球的拉力为（ ）
2C(g)，下列说法中正确的是
，运算原理如右图所示，则输出的值为 
