2. 外语
  3. A(Always) since the creation of celluloid, B(plastics) have been found C(to have) D(a multitude) of industrial and commercial us

A(Always) since the creation of celluloid, B(plastics) have been found C(to have) D(a multitude) of industrial and commercial us

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问题 A(Always) since the creation of celluloid, B(plastics) have been found C(to have) D(a multitude) of industrial and commercial uses.
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答案A
解析 always改为ever。ever since自从。
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