According to the passage, what is the effect of Jupiter's other large moons on Europa（） A: They prevent Europa's subsurface waters from freezing B: They prevent tides that could damage Europa's surface C: They produce the very hard layer of ice that characterizes Europa D: They assure that the gravitational pull on Europa is maintained ar a steady level

Zeus changed himself into ________ when seducing Europa.

Zeus took the shape of ( )when he raped Europa.

(      ) carried Europa away in the form of a white bull.

Schmidt and her colleagues are the first group of scientists studying Europa． A: Right B: Wrong C: Not mention

Who are the descendants of Io？ （ ）。 A: Europa B: Cadmus C: Hercules D: Perseus

Zeus changed himself into ________ when seducing Europa. A: a storm B: a white bull C: a cuckoo D: a swan

________ was turned into a bear by the jealousy Hera and finally was made into a constellation by Zeus. A: Io B: Callisto C: Semele D: Europa

Hera arranged Argus Panoptes who had one hundred eyes to watch over Europa, one of Zeus’ lovers.

________, one of Zeus’ mortal lovers, wanted to see the true form of Zeus, but was stricken by the flame to death. A: Io B: Callisto C: Semele D: Europa