题目

__ a single word can change the meaning of a sentence, a single sentence can change the meaning of a paragraph. A . Just as B . Even though C . Until D . Unless 答案：A下列物质都能导电，其中属于电解质的是 (　　)。A. NaCl溶液 B. 铝丝 C. 盐酸 D. 熔融的NaOH