Simon is a student in a middle school. He’s very strong. He goes to No.6 Middle School on a bus. He’s good at English. But he’s often late for his English classes. His father is a doctor. He’s big and tall. He works in a big hospital. His mother is a nurse. She’s slim and pretty. They are in the same hospital. They both work hard. He loves his father and mother very much. His father and mother both go to work by bike. We can see bikes here and there. And China is a “country(国家) of bikes”.
根据上文，判断下列句子正误.(正确的写T,错误的写F)（5分）
小题1:Simon is a student of No.6 Middle School.
小题2:Simon’s father and mother are in different(不同的) hospitals.
小题3:His father is an English teacher so he’s good at English.
小题4:His mother is a nurse.
小题5:His mother and father go to work by bus.
=1，压力角α=20°。试求这对齿轮的模数m、传动比i12、节圆直径d及啮合角α’。