题干
—Ipreferspeaking to listeningin English learning.
—Oh, really! I think you should be good at ______ of them.
—Oh, really! I think you should be good at ______ of them.
A：both
B：neither
C：some
D：all
答案(点此获取答案解析）
A
上的动点Q到直线
距离的最小值为