任务型阅读

    This is Ken. He likes pandas best. ①Because he thinks pandas are smart. Pandas are from China. His friend Tom is different from(与……不同) him. Tom's favorite animals are giraffes because he thinks they are very cute and friendly.

    I like tigers. I think they are beautiful and energetic（充满活力的）. But now the tigers, especially（特别）the Manchurian tigers(东北虎), are in great danger. We must save them.

    We love animals. ②We think people should protect（保护）all the animals.

下列描述中，哪项与社会行为无关(　　)

如图所示桃的生命周期，甲、乙、丙、丁分别表示生命周期中的四个不同的时期，数字①﹣⑥表示每个时期的相关结构．请根据所学知识回答问题．