I think the purpose of the list is to prepare people for a
fraud interview. From the text above the list:
"If the officer suspects that your marriage is fraudulent, you will be meeting the fraud unit. [...] People who do not seem to share a common language, have large differences in age, class, cultural, religion, educational background or who don't live at the same address may be called for fraud interview. [...] You may be called for fraud interview after your USCIS (for I-485) or consular interview. You may also be called when you apply to remove the conditions on your green card to convert from conditional to permanent."
The Web site appears to differentiate between a regular Adjustment-of-Status interview and a fraud interview. Just keep that in mind before you get too intimidated by the lenghty list of detailed questions.