中国有句古话：“入芝兰之室，久而不闻其香”这是因为（ ）
A：花的香味小了
B：嗅觉能力减弱
C：嗅觉有适应性
D：时间长了人不感兴趣
Susan ________ be here now because she has just gone to New York.
Schools should be lively places where individuals are encouraged to _____ their greatest potential.
对达尔文自然选择学说的正确评价是（ ）
