Early rising is helpful in more than one way. First, it ____ us to have good health. We all need fresh air. It makes our health better to take morning exercise. But air is never so fresh as early in the morning. Early rising helps us in our studies. In the morning we learn ____ and find it easy to learn something ____ heart. Early rising makes people able to plan the work for the day. We can not work well without a good plan. Just as, "The plan for a year should be made in spring, the plan for a day should be made in the morning." So the popular ____ says, "Early to bed and early to rise makes man ____, wealthy and wise."

2015年，国内某知名服装企业隐匿、变造账簿并进行虚假的纳税申报，致使国家税收损失逾千万元，该企业受到了我国司法机关的严厉查处。该企业的行为属于（  ）

一本数学书长21米．