L2：
Lecture 2
第一题
What does the professor mainly discuss?
AHow Earth’s magnetic field is generated.
BSimilarities between the Moon’s core and Earth’s core.
CMagnetic fields on the Moon and theories for their existence.
DNew evidence suggesting that the Moon is magnetic.
第二题
According to the professor what is one way in which the weak magnetic fields differ from the strong magnetic fields?
AThe weak magnetic fields are associated with certain geological features.
BThe weak magnetic fields are found only in one particular place.
Cthe strong magnetic fields are of very recent origin.
Dthe strong magnetic fields are confined to rock formations.
第三题
Why does the professor talk about the thickness of the lunar crust?
ATo point out that previous calculations of the thickness are accurate.
BTo explain why the strength of magnetic fields varies.
CTo explain what different areas of the Moon have in common.
DTo emphasize that native Moon rock is not very magnetic.
第四题
What does the professor point out about the northern rim of the South Pole Aiken Basin? AIt contains the largest grouping of strong local magnetic fields on the moon.
Bit is composed of rock formed from erupting volcanoes.
Cit contains large regions of newly formed rock.
Dit consist mainly of one type of rock.
第五题
What does the professor imply about the Moons’ interior?
AIt generates a strong global magnetic field.
BIt may once have had a core that was similar to earth’s core.
CIt contains more iron than previously thought.
DIt most likely has a fluid outer crust.
第六题
Why does woman say this:
AShe is suggesting that the hypothesis does not explain everything.
BShe is about to offer an alternative hypotheses.
CShe is confirming that the hypothesis is right.
DShe is trying to rephrase a question asked by her classmate.
