Exams always correct the wrong questions.

Changing the topic to this level is a problem with knowledge.

Your knowledge of topic investigation must be a little vague and ambiguous, so you will correct the wrong topic.

Often the first reaction is correct.

If you change the topic, either your answer is definitely wrong, or you are sure that you have changed it, otherwise don't change the topic.

It is normal for the article to give the wrong topic.

Think carefully about the author's intentions.

A famous saying of our teacher: A good topic should be "concrete but not one-sided, general but not general"