维生素C(C 6 H 8 O 6 )主要存在于蔬菜、水果中,它能增强人体对疾病的抵抗能力. (1)取3片维生素C药片,压碎后溶于10mL水中过滤,取少量滤液向其中滴加几滴紫色石蕊试液,试液变红,说明维生素C水溶液呈______性; (2)维生素C在酸性环境中比较稳定,在高温下容易被破坏,请想一想,如何才能充分利用黄瓜中丰富的维生素C?______.
【简答题】I quite understand __________ to discuss the matter before so many people. [A] you not want [B] you to not want [C] not your wanting [D] your not wanting