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题目内容
Number theory is rich in problems of an especially(i)_____sort: they are tantalizingly simple to state but(ii)_____difficult to solve.
- Acryptic.. deceptively
- Bspurious.. equally
- Cabstruse.. ostensibly
- Delegant.. rarely
- Evexing ..notoriously
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以上解析由 考满分老师提供。