2. The teeth of some mammals show “growth rings” that result from the constant depositing of layers of cementum as opaque bands in summer and translucent bands in winter. Cross sections of pigs teeth found in an excavated Stone Age trash pit revealed bands of remarkably constant width except tat the band deposited last, which was invariably translucent, was only about half the normal width.
The statements above most strongly support the conclusion that the animals died
(A) in an unusually early winter
(B) at roughly the same age
(C) roughly in midwinter
(D) in a natural catastrophe
(E) from starvation
答案是C，但我怎么觉得”ROUGHLY“和”MIDWINTER“都看不出来呢？请问就是通过。。判断的吗
谢谢帮助
depositing of layers of cementum as...translucent bands in winter
+
which was invariably translucent, was only about half the normal width
about---roughly
half the normal width of the translucent bands----midwinter
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