【简答题】A translation B interpretation C exhibition D demonstration
【简答题】A.show B.exhibition C.display D.demonstration
【单选题】The population of China___ to many times what it was in 1949, and most of its population ___ farmers.
【简答题】A.display B.production C.performance D.demonstration
【单选题】设随机变量X服从二项分布B(6,0.5),则P(X=2)=