Why does the professor say this:
A. To emphasize the importance of commercials
B. To correct something that he said earlier
C. To identify the time limits for most commercials
D. To relate new information to a previous example
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Why does the professor say this:
A. She doesn't think the point is very important.
B. She is trying to finish the lecture on time.
C. She thinks the idea will fit in better later on.
D. She doesn't want the student to interrupt her.
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.
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.
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