小白老师说：大家好，这是2020 新大纲样卷的听力 Section A 部分及答案。这部分有五则对话，英式发音，语速中等。请大家安排一个不受打扰的时间，完整地把这 15 题做一下，并核对答案。这两天将公布听力原文，并为大家做答案解析。
1. A. Food packaging.
B. Safety of processed foods.
C. Concern about sugar intake.
D. Maintenance of a healthy diet.
2. A. Red.
3. A. Indifference.
4. A. The human emotions.
B. The recent research on stress.
C. The use of mind to treat the body.
D. The relation between hunger and anger.
5. A. Neural activity increases.
B. Blood sugar level drops.
C. Blood pressure drops.
D. Heart rate increases.
6. A. They are wrongly defined.
B. They interact with each other.
C. They can be confusing sometimes.
D. They are replaceable with each other.
7. A. Choosing a hospital.
B. Carrying out a survey.
C. Issuing a health policy.
D. Buying health insurance.
8. A. It is covered by the government.
B. It has limited doctor choices.
C. It is popular in the public.
D. It has a wide coverage.
9. A. Saving money.
B. Getting better service.
C. Being easy to manage.
D. Waiting for a short time.
10. A. The use of MRI imaging.
B. The prevention of arthritis.
C. The benefits of hand exercises.
D. The possible damages to knuckles.
11. A. The bubbles in joint fluid burst.
B. The source of infection forms.
C. The friction of joints occurs.
D. The joint fluid increases.
12. A. Pop sound.
B. Broken finger.
C. Pulling-apart of bones.
D. Cracked bone.
13. A. Social media.
B. Animal world.
C. Attention span.
D. Modern devices.
14. A. It is shorter.
B. It is much longer.
C. It is misunderstood.
D. It is thoroughly studied.
15. A. They lack self-control.
B. They are easily distracted.
C. They can sustain their attention.
D. They have an extended attention span.
Conversation 1：1. C 2. C 3. C
Conversation 2: 4. D 5. B 6. B
Conversation 3: 7. D 8. B 9. A
Conversation 4: 10. D 11. A 12. C
Conversation 5: 13. C 14. A 15. C