What kind of person is Tom supposed to be?点击开始播放听力音频mp3:{MP3:http://wximg.233.com/attached/media/20130805/20130805105212111211.mp3}回答下面的题目:On what day of the week will the magazine arrive?
A. Warm-hearted but careless.
B. Curious and mischievous.
C. Helpful and tricky
D. Prudent but cautious.
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牙髓内的细胞成分不包括()
A. 成纤维细胞
B. 组织细胞
C. 成牙本质细胞
D. 成牙骨质细胞
E. 未分化间充质细胞
MRO优化阶段包括切换问题检测、切换问题统计、切换参数优化、优化参数生效确认、优化后性能评估与是否回退决策、参数回退。()
A. 正确
B. 错误