A:稀 NaOH 溶液、石蕊溶液、稀盐酸
B:稀盐酸、石蕊溶液、稀 NaOH 溶液
C:稀 NaOH 溶液、酚酞溶液、稀盐酸
D:稀盐酸、酚酞溶液、稀 NaOH 溶液
Amy: What time is it now, John?
John: It's 10:10. It's time for maths class.
John has maths class at____.
40240360}÷40{=() =()=()
(从上往下填)
This question is so hard that very ______ students can answer it.