Passage Three Questions 23 to 25 are based on the passage you have just heard. What does the speaker say about the symptoms of the common cold （）
A: They reveal the seriousness of the problem.
B: They indicate how fast the virus spreads.
C: They tell us what kind of medicine to take.
D: They show our body is fighting the virus.
A: They reveal the seriousness of the problem.
B: They indicate how fast the virus spreads.
C: They tell us what kind of medicine to take.
D: They show our body is fighting the virus.
举一反三
- What does the speaker say about the symptoms of the common cold（） A: They reveal the seriousness of the problem. B: They indicate how fast the virus spreads. C: They tell us what kind of medicine to take. D: They show our body is fighting the virus.
- Questions 14—16 are based on the following text about cold. You now have 15 seconds to read Questions 14—16. What does the speaker say about the symptoms of the common cold A: Blood becomes slow. B: Temperatures decreases. C: They show our body is fighting the virus. D: Have a headache.
- Questions 19 to 21 are based on the passage you have just heard. What are some people worried about according to the speaker？
- Questions 22 to 25 are based on the passage you have just heard 22.
- Questions 26 to 28 are based on the passage you have just heard. What does the speaker say about birds fed continually on the sonic spot（） A: They can harm nearby plants. B: They may catch some disease. C: They fight each other for food. D: They may pollute the environment.