In Animals in Translation: Using the Mysteries of Autism to Decode Animal Behavior, Temple Grandin indicates that children with autism may not independently develop the skill of asking questions about their environment. In the pivotal area of self-initiations, the goal is to help children develop the skill of making initiations and asking questions to gain information as a result of natural cues in their environments.
Strategies for increasing question asking skills can be found in chapter 2 of:
Overcoming Autism: Finding the Answers, Strategies, and Hope That Can Transform a Life
Animals in Translation: Using the Mysteries of Autism to Decode Animal Behavior