综合填空  阅读短文，用方框中所给词的正确形式填空，使短文通顺、连贯。方框中有两个为多余。

 Once upon a time, there lived a family of mice in the kitchen. One Saturday morning Father Mouse and his son felt hungry and ____  for food. ____ they were looking for food, they saw a big cat. Baby Mouse was very ____ and climbed onto his ____  back. Father Mouse shouted at the cat. “Woof, woof!” The cat ran away____  “Wow, dad, you’re great!”said Baby Mouse. “Well, son, that's why it's important to ____  a second language.”answered Father Mouse.

如图是植物细胞和动物细胞的结构示意图，据图回答问题：（内填序号A、B、C、D、E、F；横线上填结构名称）

边界望乡

——赠余光中

洛  夫