题目

选词填空 inyour aretooand (1) The panda is black white. (2) What colour is cat? (3) It is red,. (4) What's the box? (5) What colour the birds? 答案:【1】and 【1】your 【1】too 【1】in 【1】are对纯碱(碳酸钠)采用不同分类法分类:①碱、②含氧酸盐、③钠盐、④碳酸盐,其中正确的是( )A.①②③B.①③④C.①②④D.②③④
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