[多项选择]怎样进行药物终止妊娠后的随访？（）
A. 第一次随访在2周内进行
B. 第二次随访在终止妊娠后6周内进行
C. 对于孕囊未排出的者，应在超声或HCG检查确认继续妊娠后，做负压吸宫术结束妊娠
D. 无需随访

There is a common response to America among foreign writers: the US is a land of extremes where the best of things are just as easily found as the worst. This is a cliche(陈词滥调).
In the land of black and white, people should not be too surprised to find some of the biggest gaps between the rich and the poor in the world. But the American Dream offers a way out to everyone. {{U}} (46) {{/U}} No class system or govenment stands in the way.
Sadly, this old argument is no longer true. Over the past few decades there has been a fundamental shift in the structure of the American economy. The gap between the rich and the poor has widened and widened. {{U}} (47) {{/U}}
Over the past 25 years the median US family income has gone up 18 percent. For the top 1 percent, however, it has gone up 200 percent. Twenty-five years