47. What can contribute to the refinement of one's attitude, according to the passage?
A) Their idols' behaviors.
B) Their educational level.
C) Their contact with the opposite gender.
D) Their interaction with different cultures.
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48. What do many studies find about people's feelings and thoughts?
A) They may not suggest how a person is going to behave.
B) They are in a way consistent with a person's mentality.
C) They may not find expression in interpersonal relations.
D) They are in line with a person's behavior no matter what.
49. How come many people don't do what they believe is good?
A) They can't afford the time.
B) They have no idea how to.
C) They are hypocritical.
D) They lack willpower.
50. What is proposed as a strategy to change attitude?
A) Changing things that require one's immediate attention.
B) Starting to act in a way that embodies one's aspirations.
C) Adjusting one 's behavior gradually over a period of time.
D) Considering ways of reducing one's psychological burdens.
51. What does Greenpeace's study find about krill fishing?
A) It caused a great many penguins and whales to migrate.
B) It was depriving penguins and whales of their habitats.
C) It was carried out too close to the habitats of penguins and whales.
D) It posed an unprecedented threat to the wildlife around Antarctica.
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