题目

 You are all new comers here. Try not to make        to strangers. A．ways        B．connection   C．means          D．approaches 答案：D已知集合A={y|y=x2+1，x∈R}，B={y|y=2x，x∈R}，则A∩B=（　　）A．{y|0＜y＜1}B．{y|y≥1}C．{y|y≥2}D．?