2020 Shanghai Question 14 Single-choice Differentiating 2020_上海卷 (生物) 11.盛有H2O2溶液的瓶盖忘记盖上,测定其是否变质,可以加入的物质是( )①生鸡肝 ②生土豆片 ③熟鸡肝 ④炸薯条 A. ①②B. ①②③C. ①②④D. ②③④ Answer keyA ☆ SaveCan't do it, show the explanation查看原卷 →