1 I don't usually get into the habit of being meticulous. When answering questions in the exam, he was careless, which led to many problems that he could do, but he was deducted or even did not do correctly.

2 inadequate preparation. Chairman Mao said, don't fight unprepared battles. The implication is that it is difficult to win an unprepared battle, but I didn't act according to this wise saying, which led to my failure in this exam.

3 did not solve the contradiction between interest and course study. I have many interests. As a person, a complete person, an understanding person, of course, I should not let my interests be erased for no reason, just like a machine, not only sad, but also ignorant. But if you seriously delay your study because of your interest, it will be bad, not only bad, but sometimes it is really not worth the candle.