A:用托盘天平称量25.20g氯化钠固体
B:用250ml容量瓶配制150mL一定浓度的盐酸溶液
C:用一束强光照射经过煮沸的三氯化铁溶液有光亮的通路,说明已生成氢氧化铁胶体
D:过量的铁丝在氯气中点燃,可制取氯化亚铁
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长征期间,国内外形势发生重大变化,民族矛盾加剧,***的方针政策进行重大调整。这一调整是指( )
Jenny ______ with him at that time, for I was having dinner with her in my home.