2011年12月1日是第24个世界艾滋病日,世界各国通力合作,加强交流合作,共同应对艾滋病。这种实践活动是一种( )①客观的物质性活动②社会性的活动,单个人的实践活动是不存在的③自觉的能动性的活动④社会性历史性的活动
-Miss Jones once _________ music at a local college for ten years and now is an actress. -No wonder I often hear her sing some pop songs.
________ that he found it difficult to stop at the busy crossing.
High school students continue to work hard, _______ they often complain about great burdens and pressures in their life.
Without the timely aid from different provinces, the affected people in those areas ________ the difficulty.
Process has been very smooth. ______, we are not confident that it will be completed on time.