How to export a special file from ZIP archive?

Question

I have a ZIP archive with many files, is there any way to export or extract a special file from the ZIP archive without unzip the whole archive?

For example, test.zip has a.txt & b.txt, how to extract a.txt only?

test.zip/
        a.txt
        b.txt

Answer 1

unzip has an option -x with which you can say which files you don't need

manpage of unzip tells this

unzip data1 -x joe => extract all files except joe from zipfile data1.zip

Answer 2

Yes there is:

unzip test.zip a.txt

The argument after the filename is the file to be extracted. In case read:

man unzip