Mary and Juan are twins who developed from two separate fertilized ova that were fertilized by two different sperm. What type of twins are they?

The smallest units of language that convey meaning are known as:

a. semantics b. morphemes c. phonemes d. sytnaxes

Which of the following is a symptom of ADHD?

a. staying on task c. doing well in school b. being reflective d. being unusually energetic