单项选择题


SECTION A CONVERSATIONS
In this section you will hear several conversations. Listen to the conversations carefully and then answer the questions that follow.
Questions 1 to 3 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.
What will the college students do for the high school students

A.Employ them as lab assistants.
B.Teach classes at their high school.
C.Help them with their studies.
D.Pay them for participating in the study.