请教诸位高手 lsat test2-sec4 2,17

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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
答案是C,我还是弄不动题目在说什么.
17. Every photograph, because it involves the light rays that something emits hitting film, must in some obvious sense be true. But because it could always have been made to show things differently than it does, it cannot express the whole truth and, in that sense, is false. Therefore, nothing can ever be definitively proved with a photograph.

Which one of the following is an assumption that would permit the conclusion above to be properly drawn?

(A) Whatever is false in the sense that it cannot express the whole truth cannot furnish definitive proof.

(B) The whole truth cannot be known.

(C) It is not possible to determine the truthfulness of a photograph in any sense.

(D) It is possible to use a photograph as corroborative evidence if there is additional evidence establishing the truth about the scene photographed.

(E) If something is being photographed, then it is possible to prove definitively the truth about it
  为什么选A ?

StephanieYun

第1题， 有些动物死后牙齿会出现growth rings生长环， 是由于连续的不同地层埋藏压迫的作用。 opaque bands in summer and translucent bands in winter. 夏季压迫形成混浊圈，冬季压迫形成透明圈。有一直小猪的牙齿， growth rings的宽度都一致，除了最久的一圈透明圈， 只有其他圈的一半宽度，问， 题目支持结论小猪死于。。。。。。？
根据题目，容易理解C, 小猪死于一个冬季的中间时段


第2题   照片的证据作用  it could always have been made to show things differently than it does, it cannot express the whole truth and, in that sense, is false. Therefore, nothing can ever be definitively proved with a photograph.
，问assumption是什么。 论据是it could always have been made to show things differently than it does, it cannot express the whole truth and, in that sense, is false照片可能被经常表现与事实不符的一面， 不能真实表现事实全部，在这种意义上，照片可以是false假的。 结论是Therefore, nothing can ever be definitively proved with a photograph任何事情都不可以用照片作确切的证实。 题目想说， 如果照片不能真实表现事实全部就不能用作证实事情的确切证据。 A正好弥补了这个假设，(A) Whatever is false in the sense that it cannot express the whole truth cannot furnish definitive proof.

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非常感谢 StephanieYun 详细的讲解,第一题中的deposited last 是最久形成的还是最晚形成的?从词义讲是最近,而逻辑上又象是最最早.所以我就糊涂了.
  第2题中But because it could always have been made to show things differently than it does 的意思我觉得是照片通常用来表现真实的一面(does),could have done 的意思是不是可以做而没有做?不太动这菊花的意思.
  选项Whatever is false in the sense that it cannot express the whole truth cannot furnish definitive proof.
  的句子成分能帮我讲一讲吗

StephanieYun

哦， 试试吧

last，理解应该是最久远的。the band deposited last 朗文里面有解释，可以去看看吧 摘取其中原文（ 不以营利或商业为目的，仅用于学术用途，笔者注） “ last, happening or exsiting at the end , with on others after"  中文就是最后的意思

第2题的could always have been made to show 是虚拟语气，但不是指本可以作而没有做， 而是虚拟的经常可能被用作的意思，因为仅仅是可能经常被用作， 而不是实际上被经常用作，所以这里使用了虚拟语气表达。 所以句子意思不是说照片被用于表达真实一面，而是照片经常可能被用于表达与实际不符的一面。could always have been made to show things differently than it does


1.   Whatever is false in the sense that it cannot express the whole truth 是主语从句
2.   in the sense that it cannot express the whole truth 是状语从句，修饰false，说明 false的内容和状态

greenapple

谢谢如此详细的回答。可我还是觉得in the sense that it cannot express the whole truth 是修饰Whatever 的，后面的is 和cann't两个谓语在一起,真怪!!