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The reason geological activity on Mars is so (1)_____while on Earth it remains (2)______ is that Earth's diameter is about twice the size of Mars'. Because Mars is smaller than Earth, it cooled faster, and therefore it lost the internal heat that drives tectonic activity.
- Blank(i)
- localized
- moribund
- violent
- Blank(ii)
- vital
- unnoticed
- predictable
moribund , vital 显示答案
以上解析由 考满分老师提供。
