临床上寻找卵巢血管的标志是（）
A.卵巢悬韧带～卵巢门
B.卵巢子宫索
C.子宫阔韧带
D.卵巢系膜
E.卵巢固有韧带
参考答案：A
In the end he entered his ideal school______ his hard work. [ ]
A. because
B. so
C. because of
D. as
利用金属结构、轨道、管道等金属物搭接作为焊接回路，容易发生（）事故。
A.焊接
B.触电
C.其他
