In April, 2009, President Hu inspected the warships in Qingdao, ______ the 60th anniversary of the founding of the PLA Navy.
A:marking
B:marked
C:having marked
D:being marked
中国划分为四大地理区域,这四大地理区域是指( )
— I wonder ___ Mary has kept her figure after all these years.
— By working out every day.
①参加喜欢的体育运动 ②自我激励,不气馁、不抱怨
③知难而退,及时放弃目标 ④约同学去郊游,欣赏美景