题干
要使分式
有意义，则x的取值范围是( )
| x |
| + |
| 1 |
| x |
| − |
| 1 |
A：x≠1
B：x>1
C：x<1
D：x≠-1
答案(点此获取答案解析）
A
What are they? They are monkeys.