题干

下列物质的鉴别方法错误的是()

A:用水鉴别硝酸铵固体和氢氧化钠固体

B:用带火星的木条鉴别空气和氧气

C:用灼烧法鉴别棉纤维和羊毛纤维

D:用酚酞溶液鉴别稀盐酸和稀硫酸

上一题 下一题 0.0难度 选择题 更新时间:2013-06-09 07:29:04

答案(点此获取答案解析)

D

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阅读下面的文字,完成下列小题。

                                                                                    清晨我漫步在山坡谷地,

                                                                                    晨光宣泄着永恒的秘密,

                                                                                    山涧里流倘出一条小溪,

                                                                                    她在歌、在唤、在吐露心曲


                                                                                    生活并非安逸,

                                                                                    它是思念和希冀。

                                                                                    死亡并非哀歌,

                                                                                    它是失望与憔悴。

                                                                                    智者不在言词,

                                                                                    其秘密在言词背后藏nì。

                                                                                    伟人不在高位,

                                                                                    不屑权位者才配享荣誉。

                                                                                   (纪伯伦《小溪,你说什么》节选)