题干
给下列句子选择合适的答语。
① Are these all ours? ____ A. It is Zhang Peng's.
② Whose is it? ____ B. Yes，it is.
③ Is this yours?____ C. Yes. they are.
答案(点此获取答案解析）
C,A,B
淀粉溶液、蛋清、葡萄糖溶液，区别它们时，下列试剂和对应现象依次是
：①新制Cu（OH）2 ②碘水 ③浓硝酸