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.

请问陆旭老师，这个图片是网络明星课学生教材37页的第二个qx，我能排除abd，可以说一下c对比e吗？似乎我感觉e这么说可以和conclude that前面平行，但是不平行是不是更简洁，c有什么硬伤吗？之前网上资料说，逗号加连词之后要补出主语they，不过您上课说，这也不一定，还给了个反例，记得好像是after several years of rapid growth, the health care.....那个题e选项，所以我有点困惑

29题 为什么选B

想问一下May老师这道题目 黑色是题目，蓝色是我的解答过程 答案是1/8，并且说一共有8x8种可能性，这里没懂

请王文静老师解答一下这道题BC如何抉择

想问一下陆旭老师这题A哪里比不过C

请问唐塘老师这道主旨题能用范围大小吗?

请问唐塘老师这道阅读题可以用范围大小排除吗?

请问唐塘老师此题如何用范围大小作答? 是不是这个方式并非万能只是不看文章前提下出错概率低而已? 考试的时候也有可能错对吗

Why not E？