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【简答题】
最近科学家获得了一种稳定性好、抗氧化能力强的活性化合物，其结构如下 在研究其性能的过程中，发现结构片段X对化合物A的性能有重要作用。为了研究X的结构，将化合物A在一定条件下水解只得到B（ ）和C。经元素分析及相对分子质量测定，确定C的分子式为C 7 H 6 O 3 ，C遇FeCl 3 水溶液显紫色，与NaHCO 3 溶液反应有CO 2 产生。 请回答下列问题： （1）化合物B能发生下列哪些类型的反应_________。 A． 取代反应 B．加成反应 C． 缩聚反应 D．氧化反应 （2）写出化合物C所有可能的结构__________________。 （3）化合物C能经下列反应得到G（分子式为C 8 H 6 O 2 ，分子内含有五元环）； ①确认化合物C的结构为__________________。 ②FG反应的化学方程式为__________________。 ③化合物E有多种同分异构体，核磁共振谱图表明，其中某些同分异构体含有苯环，且苯环上有两种不同化学环境的氢，写出这些同分异构体中任意三种的结构_________________。
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A.
这“十四个坚持”，既是习近平新时代中国特色社会主义思想的重要组成部分，也是落实习近平新时代中国特色社会主义思想的实践要求
B.
这“十四个坚持”包括：坚持党对一切工作的领导、坚持以人民为中心、坚持全面深化改革、坚持新发展理念、坚持人民当家作主、坚持全面依法治国、坚持社会主义核心价值体系、坚持在发展中保障和改善民生、坚持人与自然和谐共生、坚持总体国家安全观、坚持党对人民军队的绝对领导、坚持“一国两制”和推进祖国统一、坚持推动构建人类命运共同体、坚持全面从严治党
C.
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D.
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相关题目：
【多选题】关于十九大报告的“十四个坚持”的说法中,正确的有( )。
A.
这“十四个坚持”，既是习近平新时代中国特色社会主义思想的重要组成部分，也是落实习近平新时代中国特色社会主义思想的实践要求
B.
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C.
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