【单选题】On seeing Jay Chow appear on the stage, the audience ______ cheering.
【单选题】I_______ laughing when my son made a face.
【多选题】投资者购买了一手原油期货合约,可以( )进行平仓
【单选题】On seeing Jay Chow appear on the stage, the audience _____ cheering.
【单选题】Did you hear the sound like that of a door _____?
【判断题】BIOS 的全称是 Basic Input Output System 。
【单选题】Basic Input Output System的简称是( )。