In January, 2004, the United States successfully launched “Spirit”, a Mars Exploration Rover, _____ a new milestone in the history of mankind.

A．it marked

B．marking

C．marked

D．to mark

从事国际公路运输经营的申请人-旦取得《公路运输经营许可证》，就不需要到外事、海关、检验检疫、边防检查等部门另外办理有关运输车辆、人员的出入境手续。（）