完形填空，通读下面的短文，掌握其大意，然后从各题所给的A、B、C三个选项中选出一个最佳答案。
Look! The girl is Jenny. The boy is her brother .1parents are teachers. Jenny and her brother are at No. 2 Middle School.
They go to school2Monday to Friday. They have no classes on 3and Sundays. They are very4in these two days because they can watch TV, play computer games and do sports. They have breakfast at 7:00. They go to school at 7:30 a.m. Classes start(开始) at eight. They have four5in the morning and two in the afternoon. They have6at 12:15. At 1:15 p.m., they have sports. At 3:00 p.m., their classes finish. So they need to be at school seven 7 in one day.
They have Chinese, English, geography, history and other lessons. Jenny's favorite8 is music,9it's relaxing. Her brother likes science. He thinks it is10but interesting. Their parents like to go to the store. They like to buy food and clothes for them. Jenny and her brother love their parents very much.
中，
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所成的角等于（ ）