2. 外语
  3. AAlways since the creation of celluloid, Bplastics have been found Cto have Da multitude of industrial and commercial uses.

AAlways since the creation of celluloid, Bplastics have been found Cto have Da multitude of industrial and commercial uses.

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问题 AAlways since the creation of celluloid, Bplastics have been found Cto have Da multitude of industrial and commercial uses.
选项 A、 
B、 
C、 
D、 
答案A
解析 always改为ever。ever since自从。
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