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CECDBEA
DDCABCE题1 定位but they had no way to verify their assumption.
C选项 using data about radii and core mass错了,这两个数据也是推理出来的
题2 两个点:1. minute variations in radio signals from Lunar Prospector as the craft moved towards or away from the Earth. (→ changes in the craft's velocity )
2. T faint magnetic field generated within the moon itself by the moon's monthly passage through the tail of the Earth's magnetosphere.磁力和重力是两回事 题5 A选项confirm的内容是第一种方法求出来的月球的core size and composition,而非第一种方法
B定位the faint magnetic field generated (within the moon itself )by the moon's monthly passage through the tail of the Earth's magnetosphere.
generated by
题6 反向推导gravitational pull→change in signal
E选项 gravity map的内容会变,但一个map还是可以弄出来的
题7
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