请问“text"是可数名词还是不可数名词?为什么?

有时可数,有时不可数,这一点你从Webster字典,金山词霸和它基于的Heritage词典里都没有明确指出,但是从Cambridge字典里很容易看出.
Cambridge字典说:
1 [U] the written words in a book,magazine,etc.,not the pictures:
The book has 100 pages of closely printed text.
2 the text of sth the exact words of a speech,etc:
Can we see the full text of your speech before Tuesday?
3 [C] a book or piece of writing that you study as part of a course:
'Ulysses' is a set text for the exam.
4 [C] a sentence or reference from the Bible which a priest reads aloud in church and talks about.
上面的U表示Uncountable不可数,C表示可数Countable

可数
text
[tekst]
n.
(作者的)原文, 主文, 正文
教科书, 课文; 讲义
【圣】经文, 经句
主题, 题目
歌词, 乐谱
版本, 一种铅字
too much text and not enough pictures
正文太多而插图不够
an algebra text book

是可数名词