【单选题】-Your sweater looks very nice. What’s it made__________? -Wool, and it’s made__________ Guiyang. [ ]
【单选题】( )12.“What’s this? ”“ ________. ” ( )44.“What’s that? ”“ ________. ”
【单选题】— What is your scarf made ______? — Silk, and it’s made ______ Hangzhou.
【判断题】标准正态分布的均值为0,标准差为1。( )
【简答题】标准正态分布的均值为1,标准差为0。( )