ChaseDream
搜索
返回列表 发新帖
查看: 2159|回复: 3
打印 上一主题 下一主题

LAST 2-2-2

[复制链接]
楼主
发表于 2004-3-8 14:14:00 | 只看该作者

LAST 2-2-2

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 that 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


没有看懂题目的意思,可不可以解释一下

沙发
发表于 2004-3-8 18:21:00 | 只看该作者
说的是牙齿的沉淀物吧,冬天就是半透明的,夏天就是不透明的


接下来,找到了一头pig,呵呵,他的牙齿最后的一小段是 invariably translucent, was only about half the normal width


    


所以它当然就是死在roughly in midwinter> >


>答案应该是c吧>

板凳
 楼主| 发表于 2004-3-8 20:18:00 | 只看该作者
不好意思,为什么was only about half the normal width可以推出它死在roughly in midwinter> 呢>

地板
发表于 2004-3-8 21:15:00 | 只看该作者
translucent band是冬天长的,现在发现这个band的宽度只有正常的一半,那么它的死亡时间就该是mid winter(没来得及长完全)
您需要登录后才可以回帖 登录 | 立即注册

Mark一下! 看一下! 顶楼主! 感谢分享! 快速回复:

手机版|ChaseDream|GMT+8, 2025-7-7 10:50
京公网安备11010202008513号 京ICP证101109号 京ICP备12012021号

ChaseDream 论坛

© 2003-2025 ChaseDream.com. All Rights Reserved.

返回顶部