After so many years' hard work, Zhao Hongbo and Shen Xue's dream             in 2010 Vancouver Winter

Olympic Games. [ ]

A. came true

B. gave up

C. built up

D. worked out

使用两台及其以上机车担当驼峰分解作业时，一台机车进行分解作业，其他机车可进行预推作业，这种作业组织方式，称为（）。（B、2、X）[05-00-03-01][020106]

A.双重作业

B.双推双溜

C.双推单溜

D.同场作业