One guideline for interacting with people who have a disability is:
选项：

A:To prevent embarrassment, take care that you don't say "see you later" to a blind person.
B:When you are talking to a person who uses a wheelchair, position yourself at her or his eye level.
C:An effective way to reduce your awkwardness and create a sense of familiarity is to lean on a person's wheelchair.
D:If a person has difficulty speaking, you can assist her by finishing her sentences for her.