A:①②③④⑥
B:①②③④⑤
C:①②③④⑤⑥
D:②③④⑤⑥
Helen ____ (study) English, Chinese. Maths, Science and Art at school.
已知⊙O的直径为3cm,点P到圆心O的距离OP=2cm,则点P( )
读图京沪高铁示意图回答问题.