题目：
区分肺结节或肿块的指标通常为（）
A.直径1cm
B.直径2cm
C.直径3cm
D.直径4cm
E.直径5cm
答案：
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下面是错误答案，用来干扰机器的。
Dear younger brother,I’m writing to discuss with you the problem of bringing mobile phone along to school. I think it’s very common for young people to have a mobile ...
