2017年3月精听第一次课p1作业

1、P1e of the discus1.What is the main pur?（主旨题）(A) To describe the design of hydrophones used by hurricane researchersroduce a new approach to measuring theer of hurricanes and cyclones(C) To explain how meteorologists study the causes of hurricanes and cyclones(D) To discuss factorst determine the wi

2、nd speed of hurricanes and cyclones2.According to the professor，what is one benefit of hurricane monitoring airplanes?（细节题）They help meteorologists determine the storms path.They can gather all nesary information in just a few flights.Their equipment is not as sophisticated as a new technology. (D)

3、They can provide direct measurements of wind speed.3.What are two advantages of using a hydrophone to measure hurricane ensity? （细节，考点为并列）Click on two answers.(A) They can transmit underwater sounds to airplanes. (B) They can lower the cost of monitoring hurricanes. (C) They can be set up before a h

4、urricane reaches an area.(D) They can be installed close to the surface of the ocean.4.What does the professor imply about the relationship betn the tworesearchers he mentions?（推断题，考点为 combine scientific disciplines）(A) It will likely lead to other breakthroughseteorology.(B) It demonstrates the imp

5、ortance oferdisciplinary collaborations.（）(C) It developed over many years of workinghe similar field.(D) It led to the invention of an underwater microphone.5.Why does the professor mention a hydrophone listening for underwater earthquakes?(为目的题，考点为：例子证明论点)(A) To poout the fact the underwater earth

6、quakes are hard to detect(B) To help explain how hydrophones work(C) To pooutt different types of hydrophoxist(D) To provide the validation（确认） of a new technique6.Listen agao part of the discus. Then answer the question.Why does the professor say this:(A) To emphasize the pohe made ear rTo find out

7、 whether the student agrees with himTo help the student find the answer to his own questionTo explahe findings of a new study(B) ToP1辩音 连读 (长度太长) 信号词 听懂了但不理解意思标记：生词需要跟读句子Listen to part of a lecture in a meteorology（气象学） class.Professor. OK. Its important to measure a hurricanesensity before it reach

8、es landbecause it can help save lives and avoid the enormous costs of an unnesaryevacuation（）. But the factors leading to a hurricanesensity like wind speed isvery tricky（听成了triggered） to measure cause theyre changing constantly. So cananyonel me how we get information about the way? Jennifer?ensity

9、 of a hurricanets on the（段落结构：需要测量飓风的强度，but 转折：但是很难测量，需要方法。）Jennifer. Well, dont we. likefly planeso it?Professor: Right. Planest monitor hurricanes fly through（听成了to） the eye of ahurricane to measure the speed of the storms wind. But its very expensive and bringsa lot of risks.（段落结构：用plane 测量，but 转

10、折：有坏处：贵+risks）Jennifer: I understand the poabout it being risky for th and lightning and everything.But umhow can it be so expensive? (说明下面要开始讲为什么贵了)lots with the high windsProfessor. Well. You see, hurricane-monitoring（没有听到ing) planes are built towithstand strong winds. And theyre usually loaded wi

11、lot of sophisticatedequipmentt wil（l 听成 we） measure wind speed and other things. One plane costsabout 100 million dollars and its single flight costs like. 50 thousand dollars. Plus,（并列） it can take as many as 10 flights to monitor a hurricane as（当.时） it approaches land. From the readings of these d

12、irect measurements of hurricane force,we can determine whether to evacuate the area. Butts an expensive approach. Imean, we cant simply fly planeso every hurricane and cyclone（旋风）.（段落结构：解释为什么贵：1.飞机本身贵 2.equipment 贵 3.plus：多次飞行也很贵，But 转折：这个太贵不好 ）Now a couple of researchers think there may be a better

13、 way to measure a hurricanesensity. uh. a muore（听成constant-effective） way. Isalmost no risks and requires much lower tech equipment so this method is very promising. Its a microphone. an underwater microphone called a hydrophone（新定义，前面已经解释了）. OK, so, how it works is. um. it receives acoustic wavesun

14、derwater. By measuring the noise of a hurricane underwater, we can predict thespeed of hurricane winds wi John?n amazing preci）. Yes,（段落结构：讲一个better way 的工作原理:hydrophone）John: But how can we hear winds blowing over(听成了blow in) the water if the microphone, the hydrophone is underwater?（提出问题:不理解则么测得）批

15、注 P3: 预判：下面一定有一个另外的方法，便宜又好批注 P4: 印证预判正确：的确有一个更好的方法批注 P5: 新方法优点 1：花费少，刚好与 plane 那个方法相反批注 P6: 预判：这个一定下面会出现工作原理批注 P7: 这句话也与前面的beter way 相呼应（听成making decicost-effective批注 P2: 说明了好处：direct批注 P1: 这里可以预判，下面会讲为什么贵+为什么有风险重点Professor. （Well, hurricanes dont just blow over the water leaving it untouched, do th

16、ey?）（这句话的意思是：台风不仅仅经过水而不触碰水，对吗？）John: Oh yeah. The water gets churned up.Professor. Hurricanes chum up（搅拌=stir up） the waves like crazy. The roilingaction（搅浑的行动） of the wind actually turns the watero（把水变成） abubble-filled froth（前方充满泡泡）. （And all thiion creates a unique rumblingsound（轰隆声） under the wat

17、er whose volume is a good indicator of the the storm. uh. the speed of the hurricane winds.）Uh. hydrophones can beensity of（部署）dreds of meters below the surface ahead of the hurricanes path（听成了pass） while conditions are still safe（优点 1）. Also, the total cost for such adeployment(部署 would be a small

18、fraction of the cost of even a single flight（优点 2：花费低）o the storm（EW=hurricane）.Jennifer. I wonder how they figured this out（想出）. I mean, how would it occur to（听成put） anyone to put a microphone under water to measure the speed of thehurricane winds?(提出疑问：不明白hydrophone 这个方法是则么想出来的)Professor: Well, th

19、iually brings us back（回顾以前） to something Ive talkedabout in class before. Its the. ah. value（好处） of combining scientific disciplines to deal with complex meteorological problems. In this case, the idea came to lightwhen two researchers from different fields met a few years ago.as NicholasMakris（第一个人

20、）, an expert of underwater acoustics and the other was Kerry Emmanuel（第二个人）, a hurricane expert. So. uh. well. the research was triggered by their conversation.（段落结构：这段讲的是方法的来源，来自俩个人并且 combine 了多学科）Emmanuel asked Makris, “Is itsiblet underwater noise could beyzed todetermine theensity of a hurricane

21、?” Makris said “yes,heoryeast.” It was acommonly known factt wind speed has something to do witderwater noise.But it was not until Makris met Emmanuelt the idea occurred to him to usetrelationship to measure hurricane winds.（这句话是一句强调句，强调是 Markris 遇见Emmaneul 以后想到了注意） So, Makris started looking for sp

22、ecific evidence to support the theory. He thought there may have been a situation where a hydrophonewas deployed for some other pure and un entionally( 无意间地) recordedhurricane noise. And he found it. In 1999, a hydrophonehe middle of the,just under a kilometer below the surface was listening for underwater earthquakeswhen a hurricane passed over it. The hydrophoncked up a low