楚每个词所代表的含义，特别是出现指代的时候。这里的they很明显指的是题干中的painters, 而不是同学们选择B时的对应句中的cave paintings。我们真正的答案句应该是文中的?This means that artists were forced to work in cramped spaces and without sources of natural light.?由于无法使用自然光而反向推导出painters只能利用人造光源，所以正确答案应该选C。
细节处理之隐藏逻辑
【例题1】The empty shell of a snail or clam may be left behind, and if it is sufficiently durable and resistant to dissolution, it may remain basically unchanged for a long period of time. TPO 20: Fossil Preservation
○When snail or clam shells are left behind, they must be empty in order to remain durable and resist dissolution.
○Although snail and clam shells are durable and resist dissolving, over time they slowly begin to change.
○Although the soft parts of snails or clams dissolve quickly, their hard shells resist dissolution for a long time.
○Empty snail or clam shells that are strong enough not to dissolve may stay in their original state for a long time.
【正确答案】D 【经典错误】A
【错误原因】隐藏逻辑的情况比较容易出现在句子简化题当中。虽然我们一直强调做这一题型时逻辑关系的发掘非常重要，但偶尔我们也会陷入到惯性思维，掉进出题者的陷阱。比如这题同学们很容易排除掉B,C两个选项，因为原句中不包含转折的逻辑。然后依据原句中的条件逻辑(if), 于是想当然地选择到A(when)。
【正确解析】如果我们仔细研究下A选项，就不难发现A选项中的条件与原句中的条件根本不是一回事：原句中的条件在A选项中变成了目的(in order to)。采取这样的排除法，我们就能选择到正确选项D了。当然，从D选项本身出发，我们也能发掘出这个句子中隐
藏的条件逻辑，即限制性定语从句that are strong enough not to dissolve。
【例题2】In addition to the internal variability of the global climate system itself, there is the added factor of external influences, such as volcanoes and solar activity. ■There is a growing body of opinion that both these physical variations have a measurable impact on the climate. ■Thus we need to be able to include these in our deliberations. ■Some current analyses conclude that volcanoes and solar activity explain quite a considerable amount of the observed variability in the period from the seventeenth to the early twentieth centuries, but that they cannot be invoked to explain the rapid warming in recent decades. ■
TPO10: Variations in the Climate
Look at the four squares [■] that indicate where the following sentence could be added to the passage.
Indeed, the contribution of volcanoes and solar activity would more likely have been to actually reduce the rate of warming slightly. Where would the sentence best fit?
【正确答案】D 【经典错误】A
【错误原因】这道题同学们误选A的原因其实很简单，就是看到要插入的句子中有volcanoes and solar activity就联想到必须放在这组词的后面。而A处似乎承接起来也问题不大，于是就直接动笔选择了。
【正确解析】这里我们又忽略了一个隐藏逻辑?indeed?。这类表示?事实上?的词(in fact, actually, virtually...)虽然不是我们通常意义上的逻辑关联词，但却能在一定程度上表达出转折或递进的含义，这种隐藏的逻辑起到的作用在插入文本题当中尤其突出。所以如果我们能够看出indeed在这里的承接关系，那么不论是转折还是递进，我们都应该知道，前文中必须提到和rate of warming相关的话题才能进行插空，这样的话D选项就不难选出了。
当然，以上提到的这些关于细节处理要注意的地方肯定还是涵盖地不够全面，我们在做题时还有可能碰到其他形形色色的细节处理失当导致错误的情况。所以同学们一定要在平时做题
时加以总结，将错误原因进行归类，这样才能避免在考场上掉进同样的陷阱之中。