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标题: 求助:GWD-10-Q14 [打印本页]

作者: gmatao    时间: 2008-9-13 15:31
标题: 求助:GWD-10-Q14

不是很理解,请NN和好心人帮我讲讲,谢谢!

Yeasts capable of leavening bread are widespread, and in the many centuries during which the ancient Egyptians made only unleavened bread, such yeasts must frequently have been mixed into bread doughs accidentally. The Egyptians, however, did not discover leavened bread until about 3000 B.C. That discovery roughly coincided with the introduction of a wheat variety that was preferable to previous varieties because its edible kernel could be removed from the husk without first toasting the grain.

 

Which of the following, if true, provide the strongest evidence that the two developments were causally related?

 

A.      Even after the ancient Egyptians discovered leavened bread and the techniques for reliably producing it were well known, unleavened bread continued to be widely consumed.

B.       Only when the Egyptians stopped the practice of toasting grain were their stone-lined grain-toasting pits available for baking bread.

C.      Heating a wheat kernel destroys its gluten, a protein that must be present in order for yeast to leaven bread dough.

D.      The new variety of wheat, which had a more delicate flavor because it was not toasted, was reserved for the consumption of high officials when it first began to be grown.

E.       Because the husk of the new variety of wheat was more easily removed, flour made from it required less effort to produce


作者: iamwuyan    时间: 2008-9-14 01:01
能发酵面包的酵母菌其实很随处可见, 过去的若干个世纪中, 埃及人却一直只做无需发酵的面包, 其实呢, 酵母菌一定会经常频繁被混在面包团中(言外之意, 酵母面包也应该很容易被发现并被制作). 然而, 直到3000BC, 埃及人一直没有发现发酵面包. 埃及人对发酵面包的发现可能和一种新的后来受到广泛欢迎的小麦品种的引进有关, 因为这种小麦的可食部位可以直接从壳上摘下, 而无需先烤小麦 

问一下哪个可以提供题干两个DEVELOPMENT(酵母面包的发现和新小麦的引进)相关联的证据, 由题意, 应该把这两者建立一种联系, 可能是找一个障碍, 这个障碍是制作发酵面包必须的一道东西, 而且跟新引进的小麦相比较老品种的特性有很大关系.

因此是C, 之前吃老品种小麦都会破坏G, 这个G呢, 是酵母菌发酵面包必须的一道东西.(而新小麦的特性是不会破坏G), 因此, 新小麦让G浮出水面, 人们用酵母菌+G两个必不可少的条件一起发明了酵母面包



作者: tianjinxtl    时间: 2008-9-14 09:08
我也错了这题
toast不知道什么意思,这下明白了,谢谢
作者: gmatao    时间: 2008-9-14 11:22
解释的够清晰!可以搞个CR培训班了,呵呵!谢谢楼上的解释!
作者: yuepeiyi    时间: 2008-10-1 10:58
thanks.
作者: hairicanye    时间: 2009-3-1 18:16
谢谢,解释的非常清楚
作者: lonesiren    时间: 2009-7-17 19:16
Fact1,尽管酵母会混进生面团,埃及人直到3000BC才吃上发酵面包。Fact2,3000BC 引进新麦子,这种麦子壳不用火烤就可以除去。
conclusion: 两个Fact有事实上的关系。
找出一个Evidence证明Conclusion:
1,,埃及人知到怎么弄发酵面包,还是吃死面团,那是口味有问题,和论证没有什么问题
2,那个Pit出现在埃及人停止烤谷物的时候,关系也不大,用什么东西烤东西总之都是烤
3,以前通过加热才能够去掉小麦的壳,但是通过加热去壳会破坏一种蛋白质,而这种蛋白质能够发酵生面团。新的小麦引进后,不用加热就可以去皮,所以这种蛋白质保留下来了,所以能自己发酵了。埃及人民幸福了,吃上蓬松可口的发酵面包。答案
4,新小麦是给高管吃的。无关,这个选项很不和谐
5,新小麦容易去壳,所以也容易制成面粉,很符合逻辑,但是更发酵与否无关。
Over

作者: dress428    时间: 2009-7-28 20:00
thx
作者: vickeysa    时间: 2009-8-1 00:11
WR
作者: lenovoo    时间: 2010-3-15 16:23
thx
作者: tiantianrao    时间: 2010-5-19 15:27
这题我也不是很理解……
作者: wwhappy    时间: 2010-5-29 23:24
本来也不理解,这下懂了!
万分感谢
作者: 马凌霄    时间: 2010-9-20 21:42

作者: xiaoxiongmomo    时间: 2010-10-29 19:53

可考试时候怎么办?
作者: onlylee0302    时间: 2011-12-11 13:52
二楼解释的好清晰,感谢!~
作者: xingmic15    时间: 2012-1-23 17:17
终于看懂了.....感觉考试的时候很难一下子记清楚这么多信息并且分析清楚,看完前面的选项,到后面可能都快忘记前面题干的内容了.....
作者: 流放者归来    时间: 2012-9-21 09:36
很点播思路,感谢NN解答~!
作者: bingyuisawinner    时间: 2014-4-30 10:42
thanks for sharing





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