如图，吸收大部分营养物质的器官是（  ）

我国宪法规定：“公民的合法的私有财产不受侵犯。”下列属于王某的合法财产的是（  ） 

爱好思考的小茜在探究两条直线的位置关系查阅资料时，发现了“中垂三角形”，即两条中线互相垂直的三角形称为“中垂三角形”．如图（1）、图（2）、图（3）中，AM、BN是△ABC的中线，AM⊥BN于点P，像△ABC这样的三角形均为“中垂三角形”．设BC=a，AC=b，AB=c．

    I'm Alan. The weekend just ended. Yesterday I went to visit the museum. It is about 3 kilometers away from my home. So I decided to go there by bike, I set off at half past eight. At the museum I saw many photos and other things. I learned a lot. There were also a lot of children with their parents，students with their teachers and soldiers. At eleven o'clock, I left the museum for home. I had a wonderful time yesterday.

阅读短文，回答下列问题。

他的理论推动了物理学理论的革命，打开了原子时代的大门，还揭示了空间、时间的辩证关系，加深了人们对物质和运动的认识。他是（   ）