题目

书面表达这是Ann家上周野餐时的照片，看图并发挥你的想象力，写一篇文章，60词左右。 答案：This is a photo of Ann's family. Look！ They were having a picnic in the park. Ann and her sister were watching the rabbit. The rabbit looks so funny. It was running in and out of the holes in the grass. Anns mother was watching some flowers. Maybe she was thinking of planting some flowers at home. Anns father and brother were running. How happy they were!高等动物细胞内产生的CO2排出体外的途径是                     （    ） A．细胞→内环境→循环系统→呼吸系统→体外 B．细胞→内环境→呼吸系统→循环系统→体外 C．细胞→呼吸系统→循环系统→内环境→体外 D．细胞→循环系统→呼吸系统→内环境→体外