寒武纪最重要的标准化石是()
A、笔石;
B、珊瑚;
C、半淡水鱼;
D、三叶虫。
参考答案:D
She quiet and gentle music pop music. [ ]
A. prefer; that
B. prefers; to
C. would like; to
D. likes; than
说说京剧的角色及其扮演的行当。