243.A. "It was reputedly in ancient Egypt that the art of making raised bread was discovered. "
244.D."... specifically wheat that did not have to be parched before the grain was separated from the stalk."
245.A. it is a process
246. B
247.C "The starchy endosperm, the inner nutritive portion of wheat grain, contains gluten-forming proteins."
248.D
249.A
250.C
251.D
252.D. this question is a little bit difficult. the answer is from paragraph 4. "According to one theory, leavening bread so that it will rise was discovered when some yeast spores drifted onto a dough that had been set aside for a while before baking. "
