根据短文内容,用方框中所给的单词的适当形式填空,每词限用一次。

The elephant is one of Thailand’s ___小题1:____.They are smart animals. People say that “Elephants never _小题2:____”.They can walk for a long way and never get lost. But elephants are __小题3:____ great danger. They are _小题4:_____their homes now. How can they live without trees? __小题5:____we must save the trees and not buy things made of ivory.

Creutzfeld-Jakob病的病理描述错误的是（）

A.异常PrP淀粉样改变

B.皮质基底节和脊髓萎缩变性

C.炎症反应明显

D.脑海绵状变性

E.神经元丢失