题目

 The old man slowly ______ to his feet and left the meeting room. A. raised         B. rose                  C. lifted          D. increase 答案：B已知集合A={y|y=1-x2，x∈R}，B={x|y=3x-1}，则A∩B=（　　）A．[0，1]B．[-1，1]C．（0，1）D．φ