题干
—_______ nice day today! —Yeah, let's take a walk outside.
A：What a
B：What
C：How
答案(点此获取答案解析）
A
—_______ nice day today! —Yeah, let's take a walk outside.
A：What a
B：What
C：How
无实数根，则⊙O与直线l的位置关系（ ）
