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.
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.
举一反三
- Questions 19 to 21 are based on the passage you have just heard. What are some people worried about according to the speaker？
- Questions 26 to 28 are based on the passage you have just heard. what does the speaker suggest we do when feeding birds in winter（） A: Place the food on warmer spots. B: Use prepared feed mixtures only. C: Avoid using any contaminated food. D: Continue the feeding till it gets warm.
- 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.
- Passage One Questions 26 to 28 are based on the passage you have just heard. A: Musical score. B: Clothing design. C: Special effects. D: The credits.
- Passage One Questions 26 to 28 are based on the passage you have just heard. A: A recreational program. B. An educational program. B: C. A program for cartoons. D. A program for commercials.