单选题:Whataretheinventorsdoinginthelab?

  • 题目分类:英语
  • 题目类型:单选题
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题目内容:
Whataretheinventorsdoinginthelab? A.Replacingcarbonfiberswithshril
B.Testingahrilk'suseinwetcondition
C.Makingshrilkoutofusedhouseholdgood
D.Improvingshrilk'sflexibilityformedicalpurpose
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