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.

麻烦金老师给我解答一下，我的思路是:基于“数字12和字母AB有特殊含义，公司往往会选择 697 483 这样的数字”这样的语意，有个because ，因为什么所以什么会更顺畅一点，所以我先考虑了BC，B我排除的理由是THEY。。哪怕忽略代词指代不明的问题（因为后面紧跟conpanies 了），也有表达啰嗦的问题。错选了B，是因为having connotation这个部分只是修饰了letters吗？然后E答案排除的理由是them多余，they 指代不明，it 的单复数问题，就算这里要用一个代词 根据前面的have也应该用一个复数形式的代词。然后A和D我不是那么清晰，A这个with要怎么理解，”公司这样做，是伴随着这样一个意识“好像也说得过去。然后D答案里面这个aware 我是理解成一个名词的 AWARE of 。。of。。无非就是想说明它是个什么要的意识，然后后面接了一个完整的句子，我起初排除它的原因是觉得两者之间少了点东西搭建逻辑关系

麻烦金老师帮我解答一下，我的思路是；A主要错在IT的单复数问题上，藏红花是复数的形式。B不是很清晰，我一直迷惑一个点就是这个being，做为助动词它主要是用来帮助表达正在被这个语意吗？还有been，对比C答案，如果我想表达之后被捣碎这个语意是不是得用after being pound ？就是藏红花发不出pound这个动作 只能被捣碎，所以才排除B的？ 然后E答案和 就是代词单复数问题

麻烦金老师帮我解答一下，我的思路是：A 得麻烦老师给我讲下这个whose的用法，就是在我固有的知识体系里它常用于疑问句，然后根据单词本身的意思，谁的，用在这里自我感觉也不太好。还有迷惑的一个点是 先忽略这个whose，这里的语意主要是想说明一下这个clans是什么样的地方，clasns 主语 谓语是access water后面是修饰语，总觉得缺个that ，还是说可以省略的？就是我理解的语意是”这个部落接近水，这个水很少受到限制“ C 不是很清晰，DE主要错在less不能修饰可数名词。

麻烦金老师帮我解答一下，根据dioxins判断为可数名词判处ABC，much修饰不可数名词。关于这句话我的理解是这个不可控且让南方的美国人暴露于其中的D的来源是。。。。然后DE这种结构我不熟悉，所以不好做出判断，麻烦老师给我讲解一下，特别是关于介词＋which这种结构不是很清楚

王文静老师你好，请问这道题目D为什么是错的？我一直记得的idiom是prevent from。这道题最明显错误点是possible和possibly吗？谢谢！

请郭老师解答下 谢谢

请郭老师解答下 谢谢

请郭老师解答下 谢谢

请郭老师解答一下下谢谢

老师你好，这道题目我选了D，因为感觉读起来比较顺口。看了正确选项以后，我发现有两处不同，1是tense上的不同，我想起来老外的辅导课程有提过GMAT不考have been这个时态，那是不是考试的时候包含havebeen的直接eliminate？ 2是yet discovered 修饰的对象不同，原文的意思是evidence yet discovered，D当中修饰对象有错误所以改变了句意所以是错的？我不知道我理解的对不对，求老师指教