|
参加了首场新版gre考试的考生都觉得语文部分的题难了，这主要是由于新gre逻辑阅读部分的内容考生还是有点不习惯，或是没有准备充足。那么，接下来的几天，小编将个大家整理一些新gre逻辑阅读的练习题，希望考生能从平日的练习中总结规律，找到解题技巧。 How can the hormone adrenaline that does not act directly on the brain have a regulatory effect on brain function? Recently, we tested the possibility that one of the hormones actions outside the brain might be responsible. Since one consequence of adrenaline release in an animal is an increase in blood glucose levels, we examined the effects of glucose on memory in rats. We found that glucose injected immediately after training enhances memory tested the next day. Additional evidence was provided by negative findings: drugs called adrenergic antagonists, which block peripheral adrenaline receptors, disrupted adrenalines ability to regulate memory but did not affect memory enhancements produced by glucose that was not stimulated by adrenaline. These results are as they should be if adrenaline affects memory modulation by increasing blood glucose levels. 10.The author refers to the results of the experiment using adrenergic antagonists as negative findings most likely because the adrenergic antagonists failed to disrupt adrenalines effect on memory | 
