这道题正确答案是 B， 我一直觉得是D, 不是特别明白 B 答案为什么 说as effectively as sea snakes can? One such adaptation is the closer proximity of the terrestrial snake's heart to its head, which helps to ensure circulation to the brain, regardless of the snake's orientation in space. The heart of sea snakes can be located near the middle of the body, a position that minimizes the work entailed in circulating blood to both extremities. In arboreal snakes, however, which dwell in trees and often assume a vertical posture, the average distance from the heart to the head can be as little as 15 percent of overall body length. Such a location requires that blood circulated to the tail of the snake travel a greater distance back to the heart, a problem solved by another adaptation. 20. It can be inferred from the passage that which of the following is true of species of terrestrial snakes that often need to assume a vertical posture? (A) They are more likely to be susceptible to circulatory failure in vertical postures than are sea snakes. (B) Their hearts are less likely to be located at the midpoint of their bodies than is the case with sea snakes. (c) they cannot counteract the pooling of blood in lower regions of their bodies as effectively as sea snakes can. (d) the blood pressure at their midpoint decreases significantly when they are titled with their heads up.

这道题感觉像是要找规律，但还是没有思路，想请教一下老师，谢谢

麻烦唐瑭老师解答一下～这道题在做的时候我其实问题有点没读懂，就读了最后一句，然后提取出来的关键点是在讲tax一直在征收but汽油的税收没有增加，只有CE选项提到的汽油，但是C在讲汽油进口是新东西，所以我选了E。想麻烦老师解释一下正确选项C，再告知一下这道题应该看哪句话。谢谢～

这道题答案选E但我选了D，难道这里的land不是动词然后intact不应该用副词吗？求解答谢谢！

麻烦唐瑭老师解答一下～这道题我做对了，但是没太懂，我定位了最后一句，感觉在讲maize和monarch butterfly之间的关系。没太读懂各选项，但只有C提到了这两个东西，所以选了C。麻烦老师讲解一下～

请王文静老师回答一下这个问题，谢谢！具体疑惑附在图二了

麻烦唐瑭老师解答一下～这道题看了题目后我没有回看题干，想问一下题目是不是在说利润增涨和涨价没有关系？我选了D，正确答案C，麻烦老师讲一下CD，谢谢～

这道题选E，我错选了D，请唐瑭老师讲解一下这种类型的题该怎么写？必须看完全文吗？怎么对比选项？希望老师把方法讲得详细一点，谢谢！

请王文静老师解答一下，谢谢1.不太会判断ACD（C是因为the magazines’…consumption to convince…money无法作主语？D是因为with不好所以排除？2. 感觉后半段“出版者说服R地中产去花钱是内政主要部分”和破折号之前部分的句意并列不了

老师我想问一下这道题，从6b=ab不是可以推出a=6吗，有点懵，求解答谢谢老师！

这道题答案选A，请问老师怎么用A推出来呀？我自己总感觉虽然能确定四个数的大小，但是比值大小不太确定