短文改错

I used to feeling pressured to do well in exams. I was such afraid of falling behind that I kept thinking about studying every minute of the day. The pressure makes me out of breath. To my disappointed, the more worried I was about my studies, the less effective I became. Later, I realized I just took pressure too serious. So I tried taking things easy by taking part in various activity out of class, enjoying music and even daydreaming about fun things.

To my delight, this worked! Gradually，I became more anxious about exams and began to take pleasure in my studies. Pressure cannot avoided. What counts is how to deal with properly, but above all, how to turn it into pleasure or challenge.

某爆破工在加工起爆炸药包时，因一时手边找不到钳子，竟用牙齿去咬雷管接口，致重伤事故。从心理学角度分析他的行为属于（）。

A.侥幸心理

B.逆反心理

C.凑兴心理

D.省能心理