老托福段子听力93篇.docx

1、老托福段子听力93篇1Community service is an important component of education here at our university. We encourage all students to volunteer for at least one community activity before they graduate. A new community program called One On One helps elementary students whove fallen behind. You education majors m

2、ight be especially interested in it because it offers the opportunity to do some teachingthat is, tutoring in math and English. Youd have to volunteer two hours a week for one semester. You can choose to help a child with math, English, or both. Half-hour lessons are fine, so you could do a half hou

3、r of each subject two days a week. Professor Dodge will act as a mentor to the tutors-hell be available to help you with lesson plans or to offer suggestions for activities. He has office hours every Tuesday and Thursday afternoon. You can sign up for the program with him and begin the tutoring next

4、 week. Im sure youll enjoy this community service and youll gain valuable experience at the same time. It looks good on your resume, too, showing that youve had experience with children and that you care about your community. If youd like to sign up, or if you have any questions, stop by Professor D

5、odges office this week.2I hope youve all finished reading the assigned chapter on insurance so that youre prepared for our discussion today. But, before we start, Id like to mention a few things your text doesnt go into. Its interesting to note that insurance has existed in some form for a very long

6、 time. The earliest insurance policies were what we called bottom contracts. They provided shipping protection for merchants as far back as 3000 B.C. In general, the contracts were often no more than verbal agreements. They granted loans to merchants with the understanding that if a particular shipm

7、ent of goods was lost at sea, the loan didnt have to be repaid. Interest on the loans varied according to how risky it was to transport the goods. During periods of heavy piracy at sea, for example, the amount of interest and the cost of the policy went up considerably. So, you can see how insurance

8、 helped encourage international trade. Even the most cautious merchants became willing to risk shipping their goods over long distances, not to mention in hazardous weather conditions when they had this kind of protection available. Generally speaking, the basic form of an insurance policy has been

9、pretty much the same since the Middle Ages. There are four points that were salient then and remain paramount in all policies today. There were outlined in chapter six and will serve as the basis for the rest of the of todays discussion. Can anyone tell me what one of those points might be?3Located

10、at the NASA Research Center in Iowa is a 5,000-gallon vat of water, and inside the tank is an underwater treadmill designed by Dava Newman, an aerospace engineer. For four years Newman observed scuba divers as they simulated walking on the Moon and on Mars on her underwater moving belt. She wanted t

11、o discover how the gravity of the Moon and of Mars would affect human movement. To do this, Newman attached weights to the divers and then lowered them into the tank and onto the treadmill. These weights were carefully adjusted so that the divers could experience underwater the gravity of the Moon a

12、nd of Mars as they walked on the treadmill. Newman concluded that walking on Mars will probably be easier than walking on the Moon. The Moon has less gravity than Mars does, so at lunar gravity, the divers struggled to keep their balance and walked awkwardly. But at Martian gravity, the divers had g

13、reater traction and stability and could easily adjust to a pace of 1.5 miles per hour. As Newman gradually increased the speed of the treadmill, the divers took longer, graceful strides until they comfortably settled into an even quicker pace. Newman also noted that at Martian gravity, the divers ne

14、eded less oxygen. The data Newman collected will help in the future design of Martian space suits. Compared to lunar space suits, Martian space suits will require smaller air tanks; and, to allow for freer movement, the elbow and knee areas of the space suits will also be altered.4Welcome to Evergla

15、des National Park. The Everglades is a watery plain covered with saw grass thats home to numerous species of plants and wildlife. At one and a half million acres, its too big to see it all today, but this tour will offer you a good sampling. Our tour bus will stop first at Taylor Slough. This is a g

16、ood place to start because its home to many of the plants and animals typically associated with the Everglades. Youll see many exotic birds and, of course, our world famous alligators. Dont worry, theres a boardwalk that goes across the marsh, so you can look down at the animals in the water from a

17、safe distance. The boardwalk is high enough to give you a great view of the saw grass prairie. From there well head to some other marshy and even jungle like areas that feature wonderful tropical plant life. For those of you whod like a closer view of the saw grass prairie, you might consider rentin

18、g a canoe sometime during your visit here. However, dont do this unless you have a very good sense of direction and can negotiate your way through tall grass. Wed hate to have to come looking for you. You have the good fortune of being here in the winterthe best time of year to visit. During the spr

19、ing and summer, the mosquitoes will just about eat you alive! Right now theyre not so bothersome, but youll still want to use an insect repellent.5Thank you. Its great to see so many of you interested in this series on Survival in Outer Space. Please excuse the cameras, were being videotaped for the

20、 local TV stations. Tonight Im going to talk about the most basic aspect of survivalthe space suit. When most of you imagine an astronaut, thats probably the fist thing that comes to mind, right? Well, without space suits, it would not be possible for us to survive in space. For example, outer space

21、 is a vacuumtheres no gravity or air pressure; without protection, a body would explode. Whats more, wed cook in the sun or freeze in the shade with temperatures ranging from a toasty 300 degrees above to a cool 300 degrees below zero Fahrenheit. The space suit that NASA has developed is truly a mar

22、vel. This photo enlargement here is a life-size image of an actual space suit worn by astronauts on the last space shuttle mission. This part is the torso. Its made of seven extremely durable layers. This thick insulation protects against temperature extremes and radiation. Next is what they call a

23、bladder of oxygen thats an inflatable sac, filled with oxygen, to simulate atmospheric pressure. This bladder presses against the body with the same force as the Earths atmosphere at sea level. The innermost layers provide liquid cooling and ventilation. Despite all the layers, the suit is flexible,

24、 allowing free movement so we can work. Another really sophisticated part of the space suit is the helmet. I brought one along to show you. Can I have a volunteer come and demonstrate?6Good evening. My name is Pam Jones, and on behalf of the Modern Dance club, Id like to welcome you to tonights prog

25、ram. The club is pleased to present the TV version of The Catherine Wheel, Twyla Tharps rock ballet. This video version of the ballet has been even more successful with audiences than the original theater production. It includes some animation, slow motion, and stop-action freezes that really help t

26、he audience understand the dance. The title of the piece refers to Saint Catherine, who died on a wheel in 307 A.D. Nowadays, a Catherine wheel is also a kind of firework. It looks something like a pinwheel. Anyway, the dance is certainly full of fireworks! Youll see how Twyla Tharp explores one fam

27、ilys attempt to confront the violence in modern life. The central symbol of the work is a pineapple, but exactly what it represents has always created a lot of controversy. As you watch, see if you can figure it out. The music for this piece is full of the rhythmic energy of rock music. It was compo

28、sed by David Byrne. Of the rock band Talking Heads? And the lead dancer in this version was Sara Rudner, who is perfectly suited to Tharps adventurous choreography. Following the video, dance teacher Mary Parker will lead a discussion about the symbolism Ms. Tharp used. We hope you can stay for that

29、. So, enjoy tonights video and thank you for your support.7In our lab today, well be testing the hypothesis that babies can count as early as five months of age. The six babies here are all less than six months old. Youll be watching them on closed-circuit TV and measuring their responses. The exper

30、iment is based on the well-established observation that babies stare longer if they dont see what they expect to see. First, were going to let two dolls move slowly in front of the babies. The babies will see the two dolls disappear behind a screen. Your job is to record, in seconds, how long the ba

31、bies stare at the dolls when the screen is removed. In the next stage, two dolls will again move in front of the babies and disappear. But then a third doll will follow. When the screen is removed, the babies will only see two dolls. If were right, the babies will now stare longer because they expec

32、t three dolls but only see two. It seems remarkable to think that such young children can count. My own research has convinced me that they have this ability from birth. But whether they do or not, perhaps we should raise another question. Should we take advantage of this ability by teaching childre

33、n mathematics at such a young age? They have great untapped potential, but is it good for parents to pressure young children? 8Before starting our tour of Monticello, Id like to give you some historical facts that might help you appreciate what you see today even more. Monticello was the very much loved