GWD6-Q24

taraGMAT

GWD6-Q24:

Each of the following is mentioned in the passage as a difference between G10 garnet and other versions of garnet EXCEPT

            A. level of oxidation

            B. commonness of occurrence

            C. chemical signature

            D. place of formation

            E. appearance in conjunction with diamonds

前面的帖子把23和25都讨论了，可是，有米有人告诉我Q24的答案，使A还是E呢？万分感激！

ring_cheng

A

而今迈步从头越

answer is A. Pls refer to the following passage for details:

For example, G10 garnets,

a type of garnet typically found in

(45)      diamond-rich pipes, are lower in

calcium and higher in chrome than

garnets from barren pipes.  Geo-

chemists John Gurney showed that

garnets with this composition were

(50)      formed only in the diamond-stability

field; more commonly found ver-

sions came from elsewhere in the mantle.  

加拿大帅哥

我还是不明白。only 又和A选项有什么关xi,   

Which one could help me explain this question?

Thanks

加拿大帅哥

  He rea-

 (60)      soned that iron took on more or less

oxygen in response to conditions in

the kimberlitic magma itself—mainly

in response to heat and the avail-

able oxygen.  When iron became

 (65)      highly oxidized, so did diamonds;

相关信息是在L59--65， Oxidize 和 difference between G10 garnet and other versions of garnet  没有关系。所以是A

hohohope

这题我也还是不明白啊...E文中不也没有提么??

shirley06296

这道题 我也不明白，可否请版主再详细解释一遍？

amy1028

我也不明白...who can help ya? thanks!

mcyinhbs

楼主说“前面的帖子把23和25都讨论了，可是，有米有人告诉我Q24的答案，”

可我怎么搜不到这个讨论贴呢？

斑竹能不能给个link？万分感谢！！

mcyinhbs

E选项中的“appearance"在这里是“出现，显露”的意思，所以E选项的意思就是：和diamond一起出现的可能

这个在文章中是描述过的：Geo-chemists John Gurney showed that garnets with this composition were (50) formed only in the diamond-stability field; more commonly found versions came from elsewhere in the mantle.