不能用于计数肋骨和椎骨的结构是（）
A.肋角
B.肩胛下角
C.胸骨角
D.第7颈椎棘突
E.胸骨体和柄结合处
参考答案：A
What did John ask you just now?
--- He wanted to know how long _________ when I reached the cinema.
A．had the film been on
B．the film had started
C．the film had lasted
D．had the film ended
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