Many students think that it isn't important to start doing your best until your first year in high school, but this is far from the truth. If you want to start off your freshman year with Honors classes, you have to make As (or high Bs) in your 8th grade year; otherwise you likely won't get accepted into these competitive, impressive, and highly sought after Honors classes. Every school is a bit different. Some schools require tests to be admitted to Honors classes, some take students based on teacher recommendation, while others will put you in whatever classes you feel like taking. To make sure you can start out high school ahead of the curve, it's best to be impressive during your years in junior high, too. If you want to excel in extracurriculars in high school – which is a great way to get scholarships, attract attention to colleges in general, and show you're well-rounded – you need to start now. There will be some really good athletes and performers in your high school, so keep up with them by starting early.  Experiment with a few activities while you're still young enough to drop them if you don't like them and pick another. And don't just stick to one area – if you're big into sports, branch out to dancing or a musical instrument. If you're more artistic, find something athletic to give a try. You could be great at it! Read the class descriptions and talk to other students who have taken the classes you're interested in. Taking a class just because a friend is taking it too won't help you and, what's more, your friend will probably just be a distraction. Instead, look for classes with students and material that is slightly above your level as the best motivator is competition.  If you're looking to be valedictorian, one of the ways to cinch that is to take loads of Honors classes (provided you can still get As). Straight As in Honors classes are even more impressive than straight As in regular classes, so take as many difficult classes as you can handle – without compromising your GPA, of course. A...

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Write a summary of the previous text in Chinese:
在七八年级努力取得最佳成绩。 早些参加课外活动，培养兴趣爱好。 慎重选择课程。 早点买教科书和辅导书。