“入芝兰之室，久而闻不知其香”是下列哪种心理现象( )
A．知觉 B．嗅觉 C．嗅觉适应 D．嗅觉感受性
参考答案：C
It has been warm these days. We are having the winter since records began. [ ]
A. coldest
B. mildest
C. worst
D. hottest
“万里长江，险在荆江”是因为
A．水土流失严重
B．河道弯曲，水流不畅，泥沙淤积在河床上，形成地上河
C．江面狭窄，水流湍急
D．落差巨大，且江底多暗礁
