单项选择题

Questions 8 to 10 are based on the following conversation. At the end of the conversation, you will be given 15 seconds to answer the questions.
Now, listen to the conversation.
According to the speaker, which of the following food can make us happy

A．Pizza.
B．Chocolate.
C．Pie.
D．Popcorn.
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单项选择题
Question 26 is based on the following news. At the end of the news item, you will be given 5 seconds to answer the question. Now, listen to the news.
A．curing Parkinson disease
B．curing a deadly cancer
C．being cured of Parkinson disease
D．being cured of a deadly cancer
单项选择题
As to the experiments taken at the Mayo Clinic, which of the following statements is true
A．Each volunteer took the same amount of food with about 1000 calories.
B．Volunteers had to wear special devices to record their weight.
C．It turned out that those who had more walking up and down stairs gained much less weight than others.
D．In the experiment every volunteer gained weight.
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