—Who’s the little baby in the photo, Li Ying? —It’s me. This photo _______ fourteen years ago. A. is taken B. took C. takes D. was taken 答案:D 解析:被动语态。根据题意可知应用过去时态,而一般过去时态的被动语态结构为was\were + 动词的过去分词。主语this photo 是单数,故用was+ 过去分词。点P是直线2x+y+10=0上的动点,直线PA、PB分别切圆x2+y2=4于A、B两点,则四边形PAOB(O为坐标原点)的面积的最小值= .