People who are infected with HIV are often looked down upon because social _____ against the disease runs so deep.

Why was he turned down from the office when he had all the appropriate _______for the job?

The government has lost a great deal of _____ because of the large increase in food pries.

Xiao Wang suggested a way to solve the _________.

Teachers have to constantly update their knowledge in order to maintain their professional(专业的)_______.