颞下颌关节紊乱病的主要症状不包括
A.下颌运动异常
B.疼痛
C.弹响
D.杂音
E.吞咽困难
参考答案:E
When I ______to take part in the sport, I felt very surprised because I had never done this before.
A.was chosen
B.chose
C.has been chosen
D.had chosen
网络消费者需求特征包括()
A.个性消费回归
B.消费需求差异性
C.消费主动增强
D.消费者直接参与生产和流通