your teacher is not to blame

acidity in this case is a relative term.
pH 7.375 is more acidic than pH 7.40 although both are alkaline from the viewpoint of chemistry

所有跟帖： 

• Good answer！ -西府来子- ♂ (0 bytes) () 01/08/2009 postreply 12:27:57

• 您哪,赶紧回答"家乐福"吧! -闽姑- ♀ (0 bytes) () 01/08/2009 postreply 15:02:39

• 回复：有人说：“。。不是个问题”；您让回答“法国佬"啥？其实给“家乐福”的答案： -闽姑- ♀ (977 bytes) () 01/08/2009 postreply 16:24:16