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托福聽力真題CH系列 005套

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why Io differs so greatly from Earth’s Moon

第1題
What discovery by the Voyager spacecraft does the professor mention?
A Io is volcanically active
B Io has several large impact craters
C Io’s orbit is highly irregular
D Io is closer to Jupiter than previously thought

第2題
What effect of Jupiter’s gravitational force does the professor emphasize?
A It causes variations in the shape of Io’s surface
B It causes variations in Io’s rate of spin
C It causes ocean levels on Io to rise and fall
D It keeps the same side of Io always facing Jupiter

第3題
What factors does the professor mention that help explain Io’s internal heat?
A Two of Jupiter’s other moons affect Io’s orbit.
B Io still retains much of the internal heat that it had when it formed.
C Heat radiating from Jupiter is absorbed by Io’s rocky surface.
D Rock movement in Io’s interior causes friction.

第4題
What do the findings of the study of Europa and Ganymede imply?
A Io’s orbit will gradually become more irregular.
B Volcanic activity on Io will eventually decrease.
C Jupiter’s gravitational pull on Io will weaken.
D Europa and Ganymede will move closer to Jupiter.

第5題
Why does the professor say this:
A To indicate that he does not like to be interrupted
B To confirm the student’s conclusion
C To remind the student that the point was covered in a previous class
D To indicate that he wanted to change the topic

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