问题
选择题
-Do you have any idea what your former boss would say about you?
-I don't know,________.[ ]
A．so do I care
B．so I don't care
C．nor I don't care
D．nor do I care
答案
答案：D
搜题请搜索小程序“爱下问搜题”
-Do you have any idea what your former boss would say about you?
-I don't know,________.[ ]
A．so do I care
B．so I don't care
C．nor I don't care
D．nor do I care
答案：D
如图所示，物体从光滑斜面上的顶端A点由静止开始匀加速下滑，经过B点后进入粗糙水平面（设经过B点前后速度大小不变），匀减速运动最后停在C点．每隔0.2秒通过速度传感器测量物体的瞬时速度大小，下表给出了部分测量数据．求：
| t（s） | 0 | 0.2 | 0.4 | … | 1.2 | 1.4 | … |
| v（m/s） | 0 | 1.0 | 2.0 | … | 1.1 | 0.7 | … |
（2）t=0.6s时瞬时速度大小v．
（3）斜面的长度L．
