题目

   The Browns have a very nice garden round their house. It has some tall trees and many flowers. Mr. and Mrs. Brown work hard in their garden. Now Mrs. Brown is in the garden getting some flowers. She will put the flowers in the dining room and in the sitting room.    Susan is sitting in a chair in the garden. She is reading a book. She takes the book from the table in the house. Susan didn’t go to work today, so she is at home. David is saying good-bye to his mother. He is running through the gate, he is going to school. He will go to school by bus. At school he will work with如图是根据某班40名同学一周的体育锻炼情况绘制的条形统计图，那么该班40名同学一周体育锻炼时间的众数、中位数分别是（ ）A. 16、10.5 B. 8、9 C. 16、8.5 D. 8、8.5