A.2                              B.                            C.1                              D.0

A.－2                                                              B.（x－1）²

C.2（x－1）                                                    D.2（1－x）

A.1                                                                 B.－1

C.±1                                                              D.

A.                         B.                            C.                       D.

A. f'（1）                                                              B.不存在

C. f'（1）                                                           D.以上都不对

A.（－1，1）                                                         B.（，）

C.（1，1）                                                            D.（－1，1）与（，）

A.2                              B.－2                                  C.3                              D.不确定

A.在点x₀处的函数值

B.在点（x₀, f（x₀））处的切线与x轴所夹锐角的正切值

C.曲线y=f（x）在点（x₀, f（x₀））处切线的斜率

D.点（x₀, f（x₀））与点（0，0）连线的斜率

A.大于0                      B.小于0                       C.等于0                      D.不等于0