我国现代化进程中的重大历史任务是( )。
A．改革开放
B．推行九年义务教育
C．加大国外贸易
D．建设社会主义新农村
参考答案：D
The journey around the world took the old sailor nine months, ________ the sailing time was 226 days.[ ]
A. of which
B. during which
C. from which time
D. for which
由临界温度和临界体积决定的气体状态称为临界状态。
