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
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
举一反三
- According to the passage, what is believed to cause the thin<br/>lines seen on Europa’s surface? ___ A: A long period of extremely high tides B: Water breaking through from beneath the surface ice C: The continuous pressure of slush on top of the ice D: Heat generated by the hot rocky core
- ( ) carried Europa away in the form of a white bull.
- IT can be inferred from the passage that Europa and Antarctica have in common which of the following（） A: Both appear to have a surface with many craters B: Both may have water beneath a thin,hard surface C: Both have an ice can that is melting rapidly D: Both have areas encased by a rocky exterior
- Who are the descendants of Io？ （ ）。 A: Europa B: Cadmus C: Hercules D: Perseus
- It can be inferred from the passage that Europa and Antarctica<br/>have in common which of the following? ___ A: Both appear to have a surface with many craters. B: Both may have water beneath a thin, hard surface. C: Both have an ice can that is melting rapidly. D: Both have areas encased by a rocky exterior.