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.

老师这道题是选a吗？我在A和E之间犹豫很久，可以讲下这道题做题思路吗

请问老师这道题应该选什么啊？可以解释下吗？特别是考场上怎么做啊 我在AC上徘徊很久

老师提问这一题

老师这道题我选的A，条件一为什么不充分？

请王文静老师解答。确实做题不知道怎么下手。划线前面讲的是自画像问题,and后面感觉也要讲自画像才能并列，排除了bcd在AE中选。我就回去看句间关系,One reason..For one thing..Also.感觉AIso后面是承接For one thing讲署名问题选E

老师这道题如果比较前后时态不一致东西可以省略么？如果不考虑过去完成时的错误？我错选了d

提问解题思路

提问解题思路

提问老师，第一句的意思

请问老师解题思路