Tom hardly hurt himself in the accident, ________?
A：didn't he
B：does he
C：doesn't he
D：did he
分式x-32x+2，2xx-2x+1的最简公分母是（ ）
Ms Jones has worked here for two years． (改为同义句)
Ms Jones has worked here____two years____.
速度v/km•h﹣1
反应时间t/s
制动距离s/m
50
0.49
13
60
0.50
20
80
0.51
34
100
0.52
54
120
0.54
85
将一张长方形的纸剪出四个大小一样的长方形，用这些小长方形能拼出哪些图形？
