单项选择题

Passage Three
Questions 32 to 35 are based on the passage you have just heard.

A．Four years.
B．Five years.
C．Three years.
D．Six years.
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填空题
Some people fear that genetic ______ may be created by such a project.
单项选择题
According to the writer, most of the culture shock happens when he ______.
A．went into the classroom after work
B．left class and went back to work
C．participated in a group project
D．took in a college sports event
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