题干
一 The bridge has been here for over l50 years.
— But it still looks nice, doesn't it?
A：less than
B：more than
C：only
答案(点此获取答案解析）
B
一 The bridge has been here for over l50 years.
— But it still looks nice, doesn't it?
A：less than
B：more than
C：only
，
，若
，则实数
的值等于（ ）．