题目内容
Question 2
A. 16 elderly people.
B. 16 young people.
C. 60 young people.
D. 60 elderly people.
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Question 3
A. It had no side-effects.
B. It had no cost.
C. It was difficult to learn.
D. It needed a little training.
Question 5
A little bit higher heart rate.
B. Psychological changes which was good for restful sleep.
C. Physical changes that aided restful sleep.
D. Less excitement during the day.
Question 1
A. They blame their children for losing the soccer games.
B. They have tolerant attitudes towards such issues as religion and immigration.
C. They hold different views on continued economic struggles.
D. They are satisfied with the police treatment of African-Americans.
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