【多选题】太阳发出的无线电波、射线及带电粒子流进地球大气层后,有哪些影响
【单选题】打开两个或两个以上Word 2010文档窗口,单击( )功能区中的“并排查看”按钮,可同时进行多窗口并排编辑。
【单选题】Mother was busy ______ when you rang up.
【单选题】《纽约时报》( )团队制作的新闻作品《死者面孔》,发布在《纽约时报》网站上。
【单选题】Mother was busy washing dishes ________________ Father was watching TV.
【单选题】When Billy's mother was busy, he played in the park.