TPO45-L2
T-cells
- What is the lecture mainly about?
- A. The process by which immune cells are produced
- B. The effects of consuming far fewer calories than usual
- C. The function of an organ found in rhesus monkeys and in humans
- D. The discovery of a nutrient necessary for good health
- Why does the professor mention the thymus?
- A. To explain how different types of food are turned into energy
- B. To give an example of an organ attacked by certain bacteria
- C. To introduce a research study by a nutritional biologist
- D. To answer a question about certain immune cells
- According to the professor, why are some cells called “naïve”?
- A. They originate from a relatively primitive type of cell.
- B. They are easily eliminated by the immune system.
- C. They are not yet able to recognize any particular protein marker.
- D. They can become part of any one of various organs of the body.
- In a recent study mentioned by the professor, what are two differences between the monkeys that have been fed a normal diet and the ones that have not?
[CHOOSE 2 ANSWERS]
- A. The monkeys on a normal diet appear older.
- B. The monkeys on a normal diet get sick less often.
- C. The monkeys on a normal diet have fewer naïve T cells.
- D. The monkeys on a normal diet tend to live longer.
- What does the professor think about a calorie-restricted diet?
[CHOOSE 2 ANSWERS]
- A. She would not find it easy to follow.
- B. She is not sure humans would benefit from it.
- C. Doctors are not likely ever to recommend it for people.
- D. It would probably affect humans differently than it affects monkeys.
- Listen again to part of the Lecture. Then answer the question.
What does the professor mean when she says this: 🎧
- A. Problems in the study make its conclusions difficult to believe.
- B. The actual effect on mice was not what it seemed.
- C. Other studies of mice produced different results.
- D. Other animals seem to react as mice do.
答案：
A D C AC AB D