To understand the main idea of an informational text, you should ask yourself
“Does the author include relevant details?”
“What is this mostly about?”
“Which facts support the claim?”
“What evidence does the author provide?”
You should always end on a note that’s likely to stick in the reader’s mind.
Answer:
Kennedy appeals to the audience's curiosity with his claim that the exploration of space is an adventure. Kennedy appeals to the audience's competitive spirit with his claim that the exploration of space will go on with or without the United States.
Answer:
Examples:
They are televising his interview throughout the world.
The TV station is televising his interview throughout the world.
Explanation:
There are various 'unknown' possibilities for the subject; THAT'S why this sentence is usually written in the passive: when you don't know who is performing the action. (AND/OR, of course, when you want the focus to be on the receiver of the action, in this case: the interview.)