The ____ is a support structure that surrounds the amnion and later becomes the lining of the placenta

The chances of becoming addicted are the same regardless of how old a person is when he or she first starts using a drug.

a. true b. false

You are taking a test about language. Your ability to think about language in order to complete the test is an example of which design feature?

a) productivity b) arbitrariness c) reflectiveness d) semanticity