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C
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It’s important for astronauts to exercise in order to keep their muscles fit.
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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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