题干
- What's _____ matter with you?
- I have _____ toothache.
A：a; the
B：the; /
C：/; a
D：the; a
答案(点此获取答案解析）
D
- What's _____ matter with you?
- I have _____ toothache.
A：a; the
B：the; /
C：/; a
D：the; a
-
=1的焦点到渐近线的距离为（ ）