题目

It’s acknowledged that there are two biggest wealth in life: your talent and your time. Talent increases and time decreases. Our life, in a way, is trading time with talents. Wasting time means our time decreases while our talents do not increase. 31   . Here are some tips on arranging your time reasonably. l         Get to know how you use your usual time and make improvements Take a week and write down what you do every 30 minutes every day and make it into categories. After a week’s recording, you’ll see which part consumes most of the time.     32      A已知等差数列{an}满足a2=3，Sn-Sn-3=51（n＞3），Sn=100，则n的值为 ．