【单选题】A: Is there a notebook on your desk? B: .
【单选题】Put your math book __ your desk .
【单选题】听力原文:Where is your training plan, Kate? (A) I put it on your desk. (B) I don't know why. (C) I used to be a good trainer. (12)
【单选题】.可用性测量学习时间,性能速度,用户出错率,记忆保持时间,主观满意度关注的是可用性的下列两个目标()