10. What does the passage mainly discuss?
(A) The effect of the tides on Europa's interior
(B) Temperature variations on Jupiter's moons
(C) Discoveries leading to a theory about one of Jupiter's moons
(D) Techniques used by Voyager 2 to obtain close-up images

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統計: A(0), B(1), C(0), D(0), E(0) #801783