【判断题】Standing on the edge of the slope, Todd was confident about his skiing skills.
【单选题】He is an expert in this FIELD.
【单选题】以下对上颌第三磨牙形态特点的描述哪个不正确:( )
【单选题】Not until I was standing on the edge of death ____ how much I wanted to live.
【多选题】从( )为特色、耗能源、大量生产、大量消耗、用后就扔的大工业文明转向少批量、多品种、电子化、信息化、多功能、系列化、安全、节能、“轻薄短小”的设计方向。