A：I’m going to see the sculpture exhibition at the University Museum next Monday.B：Oh，You mean they’ve decided to hold it over？Q：What had the man assumed about the exhibition？（）

听力原文：They are discussing a reading assignment about the ocean floor.A: Dr. Smith. I need to ask you about something in Chapter 12. Well it talks about erosion and the deposit of sediment on the deep sea floor, but I'm confused, cause, well, for that to happen there would have to be some kind of force down there moving the mud or sand or whatever, right. But I thought there weren't any waves or currents that deep in the ocean.B: That's not exactly correct. It's true that deep down on the ocean floor we won't have the same kinds of currents we find in shallower parts. But we do find what we call turbidity currents. This wasnt in the book but the term came up in class. Do you remember what itmeans?A: Umh, turbidity currents? Oh, yeah! Isn't that when sediment like sand or mud gets stirred up and mixes with water And then this mixer kind of flows through the water around it, right?B: Good!A: Umh, but I thought that only happened in rivers.B: Well, yes. This does occur in rivers, but we see turbidity currents deep in the ocean as well.A: But how do they get started there?B: Earthquakes mostly, when an earthquake occurs under water, it throws up tremendous amounts of mud or sand that becomes suspended in a layer of water near the bottom of the ocean. This layer is so much denser and heavier than other ocean water that if flows right down the slopes o f the ocean floor and gains more and more speed as it moves along. Then it's just like the winds blowing across the desert picking up sand from one place and moving it along and finally dropping it somewhere else.(31)A．The strength of ocean currents.B．The movement of sediment deep in the ocean.C．The best methods for studying deep ocean processes.D．A new way of measuring the depth of the ocean. 点击查看答案

下列哪些情形不能按互碰自赔处理?( ) 点击查看答案