C）阅读下面表格内容，从每题所给的
A、B、C3个选项中，选出1个最佳答案。ProblemsCausesAdviceFeel stressedToo much homework. Don’t have enough time for their hobbies.Make a plan for study and hobbies. Find time to relax.Getshortsighted（近视）Too much homework. Bad study habits.Do homework or read in a correct way.Fight with each otherDon’t know how to get on well with classmates.Make more friends and understand each other.Don’t like to studyThe bad influence of computer gamesPlay computer games just for a short time.Get fatHave more pocket money to buy snacks. Don’t like to do exercise.Use your pocket money to do something meaningful(有意义的). Do exercise every day.31. How many main problems are there in the survey？
A. Four. B. Five. C. Six.