[求助]LSAT-5-2-23

欧看不懂odds是什么意思，以前在CHINA DAILY上也经常碰到此词。。。是指机会吗？

23. “DNA fingerprinting” is a recently-introduced biochemical procedure that uses a pattern derived from a person’s genetic material to match a suspect’s genetic material against that of a specimen from a crime scene. Proponents have claimed astronomically high odds against obtaining a match by chance alone. These odds are based on an assumption that there is independence between the different characteristics represented by a single pattern

1）A certain number of points given beforehand to a weaker side in a contest to equalize the chances of all participants.
2）The ratio of the probability of an event's occurring to the probability of its not occurring.
3）The likelihood of the occurrence of one thing rather than the occurrence of another thing, as in a contest:
i.e.:　The odds are that she will get the nomination on the first ballot.　
４）Games　（ＣＨＩＮＡ　ＤＡＩＬＹ上的意思）
５）A ratio expressing the amount by which the stake of one bettor differs from that of an opposing bettor.
６）An amount or a degree by which one thing exceeds or falls short of another:

胜败优劣之别（一个事物超出或少于另一事物的数量或程度）

这题是意思６）

23.   “DNA fingerprinting” is a recently-introduced biochemical procedure that uses a pattern derived from a person’s genetic material to match a suspect’s genetic material against that of a specimen from a crime scene. Proponents have claimed astronomically high odds against obtaining a match by chance alone. These odds are based on an assumption that there is independence between the different characteristics represented by a single pattern.

Which one of the following, if true, casts the most doubt on the claim of the proponents of DNA fingerprinting?

(A) The large amount of genetic material that people share with all other people and with other animals is not included in the DNA fingerprinting procedure.

(B) There is generally accepted theoretical basis for interpreting the patterns produced by the procedure.

(C) In the whole population there are various different subgroups, within each of which certain sets of genetic characteristics are shared.

(D) The skill required of laboratory technicians performing the DNA fingerprinting procedure is not extraordinary

(E) In the investigation of certain genetic diseases, the techniques used in DNA fingerprinting have traced the transmission of the diseases among the living members of very large families.

答案是（C），实在读不出来题目与答案的关系，能不能麻烦哪位好心人再帮我解释一下丫？？？

首先按照5中选2原则，可以迅速排除BDE，就看AC怎么选。

题目中给出是These odds are based on an assumption that there is independence between the different characteristics represented by a single pattern.所以找削弱可以找characteristics 不是independent的情况，这样看来A和C好像都对，但是考虑到A中和DNA finger printing无关，而本题明显应该设计到DNA finger printing,所以选C