有两个学生在高考中双双落榜,都非常难过。其中,甲几天后就振奋精神,重新开始复习功课,以饱满的精神重整旗鼓,准备第二年再考。而乙却一直情绪低落,唉声叹气,愁眉苦脸。这个事例说明了 (　　)

下列运算正确的是（　　）

    Hello, I'm Tom. I'm ____ and ____. I do exercise every morning. I run for 30 ____. I ____ eat vegetables and fruit. I don't eat too much meat. Because it's ____ for me. I work hard at school and at sports. Sometimes I help my parents at home.

下列划线词解释有误的一项是  (       )