请教一道题目。

mlvince

As the honeybee’s stinger is heavily barbed, staying where it is inserted, this results in the act of stinging causing the bee to sustain a fatal injury.
A.    As the honeybee’s stinger is heavily barbed, staying where it is inserted, this results in the act of stinging causing
B.    As the heavily barbed stinger of the honeybee stays where it is inserted, with the result that the act of stinging causes
C.    The honeybee’s stinger, heavily barbed and staying where it is inserted, results in the fact that the act of stinging causes
D.    The heavily barbed stinger of the honeybee stays where it is inserted, and results in the act of stinging causing        
E.    The honeybee’s stinger is heavily barbed and stays where it is inserted, with the result that the act of stinging causes

答案是d。能给我讲解讲解b选项吗？谢谢～

aeoluseros

OA IS E.
B无主句。

mlvince

OA IS E.
B无主句。

-- by 会员 aeoluseros (2011/4/4 20:59:13)

谢谢。 答案是e。看错了

mlvince

OA IS E.
B无主句。

-- by 会员 aeoluseros (2011/4/4 20:59:13)

其实我想问，有没有主句这个怎么判断？？