题目

阅读短文，从下面每小题的A、B、C、D四个选项中选出最佳选项。 Everyschool has notice board . Let's see what is on the notice board of an Americaschool. School Policy Fighting, saying bad words and all other bad behavior will not be allowed. Do not throw rocks snowballs or sticks on the school grounds. Hand in a note a telephone to school if your child will be absent for the day. Parents and visitors need to check in at the office when entering the school. Report Card Report card about your school lite and wark will be given to you parents. Look at the一个角的补角是这个角的余角的4倍，那么这个角的大小是（　　）A. 60°B. 75°C. 90°D. 45°