题目: 以下何者不是咀嚼周期正常的特征A.轨迹图具有似滴泪水的形态B.自牙尖交错位开口时,运动速度较慢C.近最大开口位时运动速度缓慢D.闭口运动近咬合接触时,运动速度缓慢E.大张口后闭口运动开始,运动速度快 答案: 参考答案:B
题型:选择题 — Didn't bob get ready for his English speech?— No, he didn't. During his speech, he was very _____.[ ]A. excited B. womed C. nervous D. confident 查看答案