? In understanding organization questions you may be asked about the overall organization of the listening passage, or you may be asked about the relationship between two portions of the listening passage.
组织结构题示例：? Why does the professor mention Greek and Roman mythology?
? What point does the professor make about the twenty amino acids that occur on proteins on Earth?? Why does student mention climbing a ladder?
? Why does the professor tell the man about the appointment at the doctor’s office?
Opera, as we think of it, is, of course, a resurrected form. （分论点） It is the melodious drama of ancient Greek theater. (解释）以下开始举例The term “melodious drama” being shortened eventually to “melodrama” because operas frequently are melodramatic, not to say unrealistic. And the group that put the first operas together that we have, today even, were... well it was a group of men that included Galileo’s father, Vincenzo. And they met in Florence.
He and a group of friends of the count of Bardi, and they formed what is called the Camerata dei Bardi. And they took classical theater and reproduced it in the Renaissance time. This…um... this produced some of the operas that we have today. （总结）
这段文字出现了好多意大利文，但这些并不重要。我们要知道的是他为什么提到ancient Greek theater？它和 opera 有什么关系？其实听完这段文字，我们大致能明白讲的就是一帮意大利人把ancient Greek theater复活了，变成了今天opera的雏形。
Q3. Why does the professor mention ancient Greek theater ?
? A. To give an example of a culture that adopted opera from the Italians
? B. To describe the type of setting in which opera was typically performed
? C. To point out a precursor of opera.
? D. To explain how opera was introduced into French society.
? 所以这道题选c precursor n. 先驱
3.Why does the professor describe moving a sheet of heavy paper over a candle?A. To clarify that plumes do not produce great amounts of heatB. To describe an experiment he would like the students to conductC. To illustrate one hypothesis for the way some volcanic anomalies are formedD. To emphasize the thinness of some of Earth’s tectonic plates
Hmmm. Well, the most popular theory that's been proposed is the plume hypothesis. According to this hypothesis, plumes—um, basically, columns of extremely hot magma—these plumes well up from deep inside the planet's interior—maybe even as deep as its core—and rise all the way up to melt through the Earth's crust.Imagine a burning candle. And imagine moving a sheet of heavy paper slowly over the flame of the candle—you’re gonna get a series of burned spots in the paper. Well that's just like what's happening with the Hawaiian Islands. But instead of a sheet of paper, you've got a tectonic plate, and it's moving over this plume of intensely hot magma. And rather than a series of burned spots in the paper, you're getting a chain of volcanic islands... where the hot plume melts through the crust under the Pacific Ocean at one point after another—with active volcanoes on the younger islands that're now just above the plume, and the other islands … well, the farther away from the plume they are now, the older they are and the longer ago their volcanoes went dormant or extinct.
这段话的分论点前有hmmm，和well 这两个信号要注意听，接下来老师说到一个地幔柱假说的理论。紧接着老师说：Imagine a burning candle. And imagine moving a sheet of heavy paper slowly over the flame of the candle。用imagine开始举例。说明蜡烛是为了解释地幔柱理论。因此我们可以得出正确答案是C。