问题
选择题
| The two students _____ late yesterday. |
A. are all B. were all C. are both D. were both |
答案
答案：D
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| The two students _____ late yesterday. |
A. are all B. were all C. are both D. were both |
答案：D
面磨平，咀嚼无力，有耳部疼痛，来院就诊。检查：面下1／3短，牙列完整，全口牙广泛过度磨耗并超过生理范围。
治疗