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Analysis of 47.5-million-year-old fossils from Pakistan has yielded fresh insights into the early ancestors of modern whales. For example, Maiacetus inuus was a land animal (i)_____ life in the sea. One Maiacetus innus fossil encased a fetus positioned for a head-first delivery, which is typical of a land mammal and suggests the species gave birth onshore. But it probably spent much of its time (ii)_____: its big teeth were suited for catching fish, while its flipper-like feet must have been (iii)_____ walking.
- Blank(i)
- resistant
- removed from
- adapted to
- Blank(ii)
- in the water
- fleeing from predators
- protecting its young
- Blank(iii)
- incompatible with
- clumsy for
- strengthened by
adapted to , in the water , clumsy for 显示答案
以上解析由 考满分老师提供。
