知人论世是我们进行诗歌赏析的基本方法。《孟子·万章下》：“颂其诗、读其书，不知其人可乎？是以论其世也。”这告诉我们在欣赏、吟咏古人的诗歌作品时，应该深入探究他们的生平和为人，全面了解他们所生活的环境和时代。材料观点的哲学依据是（ ）
小白兔摘了21个蘑菇，小灰兔比小白兔少摘了一个，小灰兔摘了____个蘑菇。
阅读短文, 选择正确的答案。
The red coat is my mother's. It's very beautiful. The brown jacket is my father's. The blue pants are my brother's. They're new. The orange shorts aye my sister's. She likes them very much. The green socks are mine.
