溶酶体的功能有
A. 清除无用的细胞内大分子及结构
B. 参与机体的防御功能
C. 消化物质提供营养
D. 参与细胞分泌调节
E. 协助器官组织的变态和退化
F. 参与受精过程
What are the possible characteristics of the first stage of cultural shock?
In the second stage (negotiation), what kind of things may make you have the sense of disconnection from the surroundings?
In the third stage, how will your attitude change positively?