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一个看电视的孩子经历了一个声音和图像快速闪过屏幕的过程，其速度之快仅允许让眼睛和耳朵吸收这些过程。不像书可以按其愿望或快或慢地看，电视画面以过快的速度在打击而不是提高孩子的想象力。 上面所表达的推理基于一个假设，下面哪一项最好地充当了那个假设( )
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High Stress May Damage Memory According to a report issued in May 1998, elderly people who have consistently high blood levels of cortisol don’t score as well on memory tests as their peers with lower levels of the stress hormone. What’s more, high levels of cortisol are also associated with shrinking of the hippocampus, a region of the brain that plays a key role in learning and memory. The findings suggest that even cortisol levels in the normal, "healthy" range can actually acceIerate brain aging. The study results "now provide substantial evidence that long-term exposure to adrenal stress hormones may promote hippocampal aging in normal elderly humans", write Nada Porter and Philip Landfield of the University of Kentucky in Lexington in their editorial. Cortisol is a hormone released in response to stress by the adrenal glands, which sit on top of the kidneys. Over a 5 to 6-year period. Dr. Sonia Lupien and his colleagues measured 24-hour cortisol levels in 51 healthy volunteers, most of whom were in their 70s. Despite wide variation in cortisol levels, the participants could be divided into three subgroups: those whose cortisol progressively increased over time and was currently high (increasing/high); those whose cortisol progressively increased over time and was currently moderate (increasing/moderate); and subjects whose cortisol decreased, but was currently moderate (decreasing/moderate). The researchers tested the volunteers’ memory on six people in the increasing/high category and five people in the decreasing/moderate group. The groups did not differ on tests of immediate memory, but the increasing/high cortisol group had other memory problems compared with those in the decreasing/moderate group. The researchers also found that the total volume of the hippocampus in those in the increasing/high group was 14% lower than those in the decreasing/moderate group, although there were no differences in other brain regions. The results suggest that " ... brain aging can be accelerated by levels of adrenal hormones that are not generally regarded as pathological and that variation within this normal range is related to variation in the rate of brain aging," write Porter and Landfield. "This further suggests that chronic stress may accelerate the worsening of hippocampus. \ When the levels of cortisol go higher, the hippocampus in the brain may______.
基本建设资金、期货交易保证金等特定用途的资金都可以开立专用存款账户。( )
在一项颜色对生产率的作用的研究中，让100位工厂工人中的50位从其土褐色的工作间移到一间明亮的工作间中。这些工人和剩下在土褐色工作间工作的工人都增进了其生产效率。可能是因为研究人员们在他们的研究中同时对两个群体的工作都很感兴趣。 下面哪个如果正确，会对上面提供的对研究结果的解释提出最多的质疑( )
招魂术认为可以通过有特殊才能的人，即灵媒与死人的灵魂交往。这种学说是骗人的。早在19世纪70年代，埃德温·开斯特教授便指出所谓的著名灵媒亨利•史兰德的“灵书”是在“灵魂”书写之前便在石板上有了的。这个例子说明招魂术毫无价值。 如果以上的报道是正确的，下面哪个最能反驳上面的结论( )
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