托福听力每日一练第32天：
演讲听写训练1：
The cattle ranching(经营牧场) industry started in the western US in the late eighteen hundreds. As the industry developed so did the horse ridding contests that we called rodeos. Rodeos weren’t always the big entertainment shows that we see nowadays. The first ones were small contests started as an informal competition among people historically referred to the cowboys. Although they didn’t include both men and women. One duty of the cowboys was to guide the cattle from grass rangers into town along the railroad lines where the cows were loaded on to trains. The cowboys would gather near these cattle towns to compete for the unofficial title “best horse rider”. They were demonstrated the riding skills that they had learned as a matter of survival. And the audience was composed mainly of other cowboys who watch the competitor critically since they knew what the events were all about. Rodeos contest took a different turn in the 1890’s, when organizers began to hold cowboys sports during yearly agriculture affairs. What was different with the audience? It consist mostly people who were unfamiliar with the life on the range. They were amazed by the skills of riders and intelligence of horses. The rodeos at agricultural affairs became so popular that ranchers and business people began to organize rodeos as independent events separate from fairs. The organizers built large arenas(竞技场)， and earn money by requiring spectators to pay for admission. More and more notable rodeos held annually in Wyoming. It’s called frontier days. While “frontier days” is not the first independent rodeo, it is the oldest annual show taking place each year since 1897.
演讲听写训练2：
We’ve been looking at fear from biological perspective. And someone asked whether the tendency to be fearful is genetic. While some study done with mice indicate that mammals do inherit fearfulness to some degree. In one study for instance, a group of mice were placed in the bright lit open boxes with no hiding places. Some of the mice wondered around the box and didn’t appear to be bothered about being so exposed. But other mice didn’t move. They stayed up against one wall, which indicate that they were afraid. Well, when fearful mice or you might say anxious mice like ones who stayed in one place. When mice like this were bred with one another repeatedly, after about 12 or so generations, then all of the offspring show similar signs of fearfulness. And even when the new born mouse from this generation was raised by a mother and with other mice who were not fearful, that mice still tend to be fearful as the result. Now, why is this? Well, it’s thought that the specific gene in animal body have influenced on the anxious behavior. These genes that are associated with particular nerve cell receptors in brain. And the degree of overall fearfulness in the mammal seem to depend in the large part on the presence or absence of these nerve cell receptors. And this appears to apply to humans as well by the way. But while the tendency towards anxiety and fear may well be an inherited trait, but the specific form that the fear takes has more to do individual environment. So a particular fear like the fear of snakes or the fear of spider, say, is not genetic. But the overall tendency to have fearful responses is.
演讲听写训练3：
One type of natural spring geographer is interested in is artesian spring. Hikingthrough the woods some of you are surprised to see water flowing from the opening in the ground. That will no more ever. That may be artesian spring. To help you understand why water might flow like this from underground, I’d like to explain two basic conditions that necessary for their formation. The first condition is that water must be contained in an aquifer(含水土层). An aquifer is an underground layer of rock sediment that has pores or holes in it. And this pores rock allows water to flow through it freely. The aquifer must be inclined so that the over the surface of the ground. Rain water enter this through exposed and traveled downward to the lower portion of the aquifer. The second condition is that above and below the aquifer there must be layer of pores or clay. Either called aquicludes(含水土层), and they block or hinder the flow of water. Aquicludes prevent water from drilling out of aquifers. So, let us go back to our artesian spring. There usually located above the ground near the lower and wind …… aquifer. A artesian spring are those places some hole crack stand from the ground surface, down through the Aquicludes and into the aquifer. Now the rain water that had drilled into the aquifer makes expose up end created pressure at the low end, so if there is crack in the rock, a crack that run from the aquifer to the surface, then the pressure pushes the water up through it. and water trickling out of the artesian spring.
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