一足着地至同一足再次着地的距离称为（）
A.步幅
B.步长
C.步宽
D.步频
E.步速
参考答案：A
The two men walked _____ the forest and got to a small house. [ ]
A. across
B. through
C. crossing
D. over
有合法的传销组织。
