题目

I feel upset，for there are so many troublesome problems         ． A．remaining to settle                          B．remained to settle C．remaining to be settled                       D．remained to be settled 答案：C如图，直线l是经过点（1，0）且与y轴平行的直线．Rt△ABC中直角边AC=4，BC=3．将BC边在直线l上滑动，使A，B在函数的图象上．那么k的值是（ ）A．3B．6C．12D．