题干
一 Could you tell me ? I must find him.
一Sorry, I'v no idea. But he was here just now.
A：where Tom was
B：where Tom has gone
C：where can I find Tom
D：where Tom has been
答案(点此获取答案解析）
B
，（
为参数）与直线
交于相异两点，则实数
的取值范围是（ ）