【正文】 however, a lot of water evaporates or passes down into the ground. This wastes a lot of water because the water is not available for other purposes such as drinking. Irrigation, the artificial watering of land for agriculture, has a high use of water. Water for irrigation es from several sources, such as direct rainfall, rivers, lakes, and reservoirs. Some irrigation methods use a lot of water, such as flooding large fields. According to the reading, flooding is widely used because of low cost and long tradition. However, the lecture casts doubt on this point by stating that surface methods are not efficient.Word count:169Generally, the points made in the lecture cast doubt on the information in the reading, which does not address the wastefulness and lack of efficiency of surface irrigation.The key points from the lecture are:Stop Fortunately, there are several irrigation technologies that are more efficient than the poorly controlled and highly wasteful flooding methods. They range from sprinkler systems to drip irrigation. In sprinkler systems, water is sprayed over crops, and this provides an even distribution of water. New precision sprinkler technologies have greatly improved our ability to deliver water exactly when and where it’s needed. However, sprinkler systems are also a form of surface irrigation, and just as in other surface methods, some of the water is still lost to evaporation. Some forms of irrigation use water more efficiently than others. The efficiency of water use varies by region, crop, agricultural practice, and technology. The least efficient types of irrigation are the surface methods. Your reading really didn’t go into this, but think of how much water it takes for a traditional surface method like field flooding. It takes a lot of water to flood a field. The water collects into ponds or basins, but then most of it either evaporates into the air or passes down through the soil into groundwater. This means that, in lots of places, less than half of all the water applied to a field is actually used by the crop. The rest is lost to evaporation or to groundwater. All of the flooding methods generally waster a lot of waterwater that could otherwise be used for other purposes. One thing that really concerns water resource analysts is how much water agriculture uses. Agriculture uses a lot of water, more than all other waterusing sectors of society. One of our greatest concerns is the very high use of water by irrigation. This is because, in most cases, the water used for irrigation can’t be used afterward for other purposes, such as water supply for homes or industry. (narrator)Now listen to part of a lecture on the same topic.(Professor) t move very quickly. Why? Because it took so long to reach consensus。t contribute much at all, but if their team did a good job, they nevertheless benefited from the recognition the team got. And what about group members who worked especially well and who provided a lot of insight on problems and issues? Well... the recognition for a job well clone went to the group as a whole, no names were named. So it won39。s overall results can be more farreaching and have greater impact than what might have otherwise been possible for the person to acplish or contribute working alone.nt actually growing continuously but were experiencing periods of rapid growth and periods of no growth in succesion. This pattern. she says is characteristic of non endothermic aanimals.Thus it can be inferred that the professor challenges the passage by giving reasons as to why she thinks that the dinosaur is not an endotherm. 八、A reading passage like the following will appear on your puter screen. You will have 3 minutes to read the passage.The issue of leg position and movement being used as a reason to clasify the dinosaurs as endotherms does not please the professor either. She says that dinosaurs had legs under their bodies to support their huge bodies the legs under the body of the dinosaur were actually to support the huge weight of the dinosaur and not to provide it with a body structure like endotherms(which is actually suited for running).Finally, the mystery of the panel consisting of patches glued together is also solve