最容易导致前 * * （球部）损伤的是（）。
A.骨盆骨折
B.骑跨伤
C.尾骨骨折
D.下肢挤压伤
E.股骨颈损伤
参考答案：B
下列计算中正确的是[ ]
A．0﹣（﹣1）=﹣1
B．﹣4+（﹣2）=6
C．4﹣（﹣5）=﹣1
D．﹣1﹣1=﹣2
How _____ you say that you really understand the whole story if you have only covered only part of the
article? [ ]
A. can
B. must
C. need
D. may
