| GWD-12-Q11*** In general, jobs are harder to get in times of economic recession because many businesses cut back operations.  However, any future recessions in Vargonia will probably not reduce the availability of teaching jobs at government-funded schools.  This is because Vargonia has just introduced a legal requirement that education in government-funded schools be available, free of charge, to all Vargonian children regardless of the state of the economy, and that current student-teacher ratios not be exceeded. 
 Which of the following, if true, most strengthens the argument?
 B。During recent periods when the Vargonian economy has been strong, almost 25 percent of Vargonian children have attended privately funded schools, many of which charge substantial fees. 经济好转时人们有钱去上私人学校,现在衰退,公立学校学生增多,老师也要增多。 GWD-10-Q14***: 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生面团 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, provides the strongest evidence that the two developments were causally related?
 C. Heating a wheat kernel destroys its gluten, a protein that must be present in order for yeast to leaven bread dough.因为加热会破坏,这个不加热的不会破坏-〉所以发现了
 1.         T-3-Q3.  Scientists have made genetic modifications to cotton to increase its resistance to insect pests. According to farmers’ report, the amount of insecticide needed per acre to control insect pests was only slightly lower for those who tried the modified seed than for those who did not. Therefore, since the modified seed costs more than ordinary seed without producing yields of higher market value, switching to the modified seed would be unlikely to benefit most cotton farmers economically. 
 Which of the following would it be most useful to know in order to evaluate the argument?
 
 A.     Whether farmers who tried the modified cotton seed had ever tried growing other crops from genetically modified seed.
 B.      Whether the insecticides typically used on ordinary cotton tend to be more expensive than insecticides typically used on other crops. 什么意思啊?感觉很无关的,管other crops什么事? C.      Whether for most farms who grow cotton it is their primary crop D.     Whether the farmers who have tried the modified speed planted as many acres of cotton, on average, as farmers using the ordinary seed did. E.      Whether most of the farmers who tried the modified seed did so because they had previously had to use exceptionally large quantities of insecticide. 我认为选D 
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