老师您好能否帮我讲解下下面这个文章考试时该如何读，我读完这种文章压根不知道在说什么，只知道在讲ocean basin形成机制的几种理论。No very satisfactory account of the mechanism that caused the formation of the ocean basins has yet been given. The traditional view supposes that the upper mantle of the earth behaves as a liquid when it is subjected to small forces for long periods and that differences in temperature under oceans and continents are sufficient to produce convection in the mantle of the earth with rising convection currents under the mid-ocean ridges and sinking currents under the continents. Theoretically, this convection would carry the continental plates along as though they were on a conveyor belt (conveyor belt: n. 传送带) and would provide the forces needed to produce the split that occurs along the ridge. This view may be correct: it has the advantage that the currents are driven by temperature differences that themselves depend on the position of the continents. Such a back-coupling, in which the position of the moving plate has an impact on the forces that move it, could produce complicated and varying motions. On the other hand, the theory is implausible because convection does not normally occur along lines, and it certainly does not occur along lines broken by frequent offsets (an abrupt bend in an object by which one part is turned aside out of line) or changes in direction, as the ridge is. Also it is difficult to see how the theory applies to the plate between the Mid-Atlantic Ridge and the ridge in the Indian Ocean. This plate is growing on both sides, and since there is no intermediate trench, the two ridges must be moving apart. It would be odd if the rising convection currents kept exact pace with them. An alternative theory is that the sinking part of the plate, which is denser than the hotter surrounding mantle, pulls the rest of the plate after it. Again it is difficult to see how this applies to the ridge in the South Atlantic, where neither the African nor the American plate has a sinking part. Another possibility is that the sinking plate cools the neighboring mantle and produces convection currents that move the plates. This last theory is attractive because it gives some hope of explaining the enclosed seas, such as the Sea of Japan. These seas have a typical oceanic floor, except that the floor is overlaid by several kilometers of sediment. Their floors have probably been sinking for long periods. It seems possible that a sinking current of cooled mantle material on the upper side of the plate might be the cause of such deep basins. The enclosed seas are an important feature of the earth’s surface, and seriously require explanation because, in addition to the enclosed seas that are developing at present behind island arcs, there are a number of older ones of possibly similar origin, such as the Gulf of Mexico, the Black Sea, and perhaps the North Sea.

请教may老师这道题的思路

老师，逻辑200题这个题，我觉得B是抬扛呀，原文说这个有关系，这个B选项说没关系，这不也是抬扛的一种吗。我选的A，是因为我觉得我当时设想的答案可以就是cliche在这个环境中是没啥作用的，不会影响elect的最终成功与否，这个A选项我觉得就是表达了我这个意思

老师，这是逻辑200题里面的，您在视频课里讲到的一点，这个less cooperative得有比较，也就是看钱和不看钱的得有比较，原文只有看钱的，没说不看钱的，我非常同意，我当时也是这么想的，所以选择了C

例题9， 间接法-4C1* 6C1 是指4对夫妻中的一对，是二个人. 6C1指6人中的1人， 一对夫妻* 1人，单位数量不对，可以相乘？

例17，如何知道剩下6人不符合电脑系，剩下8人不符合数学系？如何知道是哪些人不符合2个部门？假如题目写if none of the rest of candidates 会表意精确些？

例16， 假如数字变大，选出50本，不可能手算的，我的解题思路看右边， 4C1*6C1* 8C3， 为什么不能这么算？

例题16, 因为要求value of K. 1) 怎么变成条件到结论的推导, sufficient or insufficient? 2) 单看条件2，7平方不是K因子. 怎么会条件2成立？ 因为有6 factors.

例题17 好不清楚的点是 2n= a*b*c*d, 1)为什么要假设质因数(prime factor)里面是否有2.因为本来就是2n，而且条件1提到4个不同的质因数. 2)题目是求确切值？还是说sufficient or insufficient ? 问how many

请问这道题该怎么判断

请问这道题D选项和E选项应该怎么判断？