单项选择题

Questions 14 to 16 are based on the following passage. At the end of the passage, you will be given 15 seconds to answer the questions. Now, listen to the passage.
What is the main subject of this talk

A．The history and traditions of early corn farmers.
B．The growing cycle of Indian corn.
C．Differences between the two corn harvests.
D．Various ways to prepare corn.
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单项选择题
According to the speaker, what can be inferred about genealogical research
A．It is very difficult, so only professionals can get reliable results.
B．The findings can never be trusted because the data is not reliable.
C．It can be useful for police investigations.
D．Some people do it for fun.
单项选择题
What does the woman want the man to do
A．Explain his technique.
B．Program her computer.
C．Help her with her homework.
D．Join a tutorial.
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