1
C is the answer.
The stimulus says that the discovery of yeast to leaven bread dough happens at the same time that a new variety of wheat was found. The new wheat is edible without toasting.
The question stem ask you to find an answer choice which support a causation between the two events.
C says that a protein required for yeast to leaven bread dough is destroyed during toasting. That ensures that before the introduction of the new wheat, yeast could not leaven bread dough made from toasted wheat. Once the new wheat was found, its edible part could be separated without heating so that the protein required for yeast to work would be present in the bread dough. This supports the hypothesis that yeast was discovered because a new wheat was introduce
-- by 会员 sdcar2010 (2012/3/22 11:50:12)
2
This is similar to A+B=C.
aflatoxin + milk = cancer.
Choice A) says, aflatoxin is in the island.
-- by 会员 sdcar2010 (2012/3/22 11:53:28)
always "sdcar2010", you are very powerful!
do you mind making a tip to teach students how to crack the CR,
and i found your mind always keep clear, and fimilar the relationship of different subjects or matters in the argument.
i suggest you to write down your method in detail
-- by 会员 edwinwos (2012/4/12 13:58:43)