题干
— Will you go ________ when you are back in your hometown this winter holiday?
— No, we _______have any time because we'll visit our relatives.
— No, we _______have any time because we'll visit our relatives.
A：sightseeing ; hardly
B：swimming, usually
C：shopping; happily
答案(点此获取答案解析）
A
与圆
交于
两点，且
（其中O为坐标原点），则实数
的值是 （ ）