【单选题】—Why are you so excited? —Lucy invited me ______ to her birthday party.
【判断题】表面粗糙度代(符)号应注在可见轮廓线、尺寸线、尺寸界线或它们的延长线上,也可以注在指引线上。符号的尖端必须从材料外指向被注表面,代号中数字及符号的方向必须与尺寸线上的数字方向一致。
【单选题】Lucy went to meet a friend at the airport, holding a sign _______ 'Martin Bygate'. [ ]
【判断题】重心、重心线、支撑面与人体运动规律关系十分密切,重心线落于支撑面以外,人体才能保持平衡。
【判断题】重心、重心线、支撑面与人体运动规律关系十分密切,重心线落于支撑面以内,人体才能保持平衡。
【单选题】All the students went to the Blue Water Aquarium ______ Lucy because she was ill in hospital. [ ]
【单选题】—Jim, Do you know ________ last Sunday? —She went to the theatre with her friends.