omplete her project.
Passage Two
Questions 15 to 17 are based on the passage you have just heard.
15. A) By greeting each other very politely.
B) By exchanging their views on public affairs.
C) By displaying their feelings and emotions.
D) By asking each other some personal questions.
16. A) Refrain from showing his feelings. C) Argue fiercely.
B) Express his opinion frankly. D) Yell loudly.
17. A) Getting rich quickly. C) Respecting individual rights.
B) Distinguishing oneself. D) Doing credit to one's community.
Passage Three
Questions 18 to 20 are based on the passage you have just heard.
18. A) If they don't involve any risks.
B) If they produce predictable side effects.
C) When the urgent need for them arises.
D) When tests show that they are relatively safe.
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