题干
已知： f(
)=
，则f（2）的值为（ ）
| 1 |
| x |
| 1 |
| x |
| + |
| 1 |
A：
B：
C：3
D：
答案(点此获取答案解析）
B
s’ climbing in the mountain, they reached they thought was the place they’d been dreaming of．