题目:
木结构是指组成木材各种细胞的大小和性质,有()
A、粗结构
B、细结构
C、均匀结构
D、不均匀结构
答案:
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参考答案:A解析:[听力原文] Many times, it’s just about the time where things begin to jell that you may realize that your assignment is ending and the time has come t...