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A．Help them with their studies.
B．Pay them for participating in the study.
C．Employ them as lab assistants.
D．Teach classes at their high school.
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单项选择题
A．At the end of the online catalogue.B．At the Reference Desk.C．In The New York Times.D．In the Reader’s Guide to Periodical Literature.
A．At the end of the online catalogue.
B．At the Reference Desk.
C．In The New York Times.
D．In the Reader’s Guide to Periodical Literature.
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