Which of the sentences below best expresses the essential information in the highlighted sentence in the passage？ Incorrect choices change the meaning in important ways or leave out essential information.
A. Snakes have an unusual method of smelling which is similar to the way other animals breathe.
B. As well as being used for smelling, the nostrils and nasal cavities also serve the additional function of allowing the snake to breathe.
C. Uniquely, a snake's tongue is what helps it to pick up scents, and its nostril or nasal cavity is for other tasks.
D. As well as having peculiar tongues, snakes also have distinctive nostrils and nasal cavities.
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Why does the professor mention running？
A. To digress from the topic with a personal story
B. To make a comparison between reading and running
C. To show that reading requires physical effort
D. To clarify the times two rule
What does the professor imply when she says this:
A. She is very uncertain about the risks of the research.
B. She is somewhat interested in doing research in this area.
C. She is withdrawing her support for future research.
D. She agrees that research should continue in spite of problems.
According to the professor, why do consumers develop brand loyalty？
A. They have a relationship with the personality that the product projects.
B. They are able to recognize the brand easily when they see it.
C. They tend to make decisions based on recommendations by friends.
D. They find a product that they like and continue to buy it.
Why does the student say this:
A. She is apologizing for disagreeing with the professor.
B. She is interrupting politely to ask a question.
C. She is talking to herself during the lecture.
D. She is changing the subject of the professor's talk.
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