A.It has a short tail and small eyes.

B.It has a long tail and big eyes.

【答案】B

【解析】

句意：“看到一条金鱼，你想告诉同学它有长尾巴和大眼睛，”长尾巴和大眼睛英语翻译为long tail and big eyes，选项A是指的是短尾巴和小眼睛，故选B。