问：下面哪个可以解释这个现象?

　　38.2

　　叫AX什么的病，是因为缺维生素A什么。维生素A要和FAT一起才能更好的吸收。然后说有个地方的孩子有摄入很多维A ，但他们AX发病率还是很高，——————。

　　选项C 和E都和FAT有关。

　　C：孩子们补充FAT可以降低这个病的概率。(狗主答案)

　　41.

　　GWD25-Q36

　　The chemical adenosine is released by brain cells when those cells are active. Adenosine then binds to more and more sites on cells in certain areas of the brain， as the total amount released gradually increases during wakefulness. During sleep， the number of sites to which adenosine is bound decreases. Some researchers have hypothesized that it is the cumulative binding of adenosine to a large number of sites that causes the onset of sleep.

　　Which of the following， if true， provides the most support for the researchers’ hypothesis?

　　A. Even after long periods of sleep when adenosine is at its lowest concentration in the brain， the number of brain cells bound with adenosine remains very large.

　　B. Caffeine， which has the effect of making people remain wakeful， is known to interfere with the binding of adenosine to sites on brain cells.

　　C. Besides binding to sites in the brain， adenosine is known to be involved in biochemical reactions throughout the body.

　　D. Some areas of the brain that are relatively inactive nonetheless release some adenosine.

　　E. Stress resulting from a dangerous situation can preserve wakefulness even when brain levels of bound adenosine are high.

　　答案选b

　　42. 【污染】

　　河里的鱼因为空气中漂浮的污染物死亡，又知道这种漂浮的污染物能够在空气中漂浮很久到达很远的地方

　　问：ASSUMPTION

　　46. 【报纸风格】

　　一个报纸因为traditional writing style，难以吸引年轻人，所以要换风格，适合更多年轻人的口味。

　　问：这个plan能成功假设

　　狗主答案失去的极力抵制这种新风格的人的数量不会比吸引的年轻人数量多(可能局部回忆不准)

　　47. 【画】

　　有个画上(原来认为是16世纪的)的签名用一种什么原料，含有一种物质，这种物质只有在18世纪才出现，所以断定这签名出自他人之手。

　　问：假设or加强