老托福段子93篇
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1Com mun ity service
Community service is an important component of education here at our university. We en courage all stude nts to volun teer for at least one com mun ity activity before they graduate. A new com mun ity program called "One On One" helps eleme ntary stude ntwho've falle n beh ind. You educati on majors might be especially in terested in it because it offers the opport unity to do some teachi ng— that is, tutori ng in math and En glish. You'd have to volun teer 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 hour of each subject two days a week. Professor Dodge will act as a men tor to the tutors---he'll be available to help you with less on pla ns or to offer suggesti ons for activities. He has office hours every Tuesday and Thursday after noon. You can sig n up for the program with him and beg in the tutori ng n ext week. I'm sure you'll enjoy this com mun ity service and you'll gain valuable experience at the same time. It looks good on your resume, too, showing that you've had experience with children and that you care about your community. If you'd like to sign up, or if you have any questions, stop by Professor Dodge's office this week.
2 discussi on about in sura nce
I hope you've all fini shed readi ng the assig ned chapter on in sura nce so that you're prepared for our discussi on today. But, before we start, I'd like to men ti on a few things your text does n't go in to. It's
in teresti ng to n ote that in sura nce has existed in some form for a very long time. The earliest in sura nce policies were what we called bottomry con tracts. They provided shipp ing protect ion for mercha nts as far back as 3000 B.C. I n gen eral, the con tracts were ofte n no more than verbal agreeme nts. They gran ted loa ns to mercha nts with the un dersta nding that if a particular shipme nt of goods was lost at sea, the loa n did n't have to be repaid. In terest 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 con siderably. So, you can see how in sura nce helped en courage intern ati onal trade. Eve n the most cautious mercha nts became willi ng to risk shipp ing their goods over long dista nces, not to men ti on in hazardous weather con diti ons when they had this kind of protect ion available. Gen erally speak ing, the basic form of an in sura nce policy has bee n pretty much the same since the Middle Ages. There are four points that were salie nt the n and rema in param ount in all policies today. There were outlined in chapter six and will serve as the basis for the rest of the of today's discussi on. Can anyone tell me what one of those points might be?
3 treadmill
Located at the NASA Research Cen ter in Iowa is a 5,000-gall on vat of water, and in side the tank is an un derwater treadmill desig ned by Dava Newma n, an aerospacee ngin eer. For four years Newma n observed scuba divers as they simulated walk ing on the Moon and on Mars on her un derwater movi ng belt. She wan ted to 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 in to the tank and onto the treadmill. These weights were carefully adjusted so that the divers could experie nce un derwater the gravity of the Moon and of Mars as they walked on the treadmill. Newma n con cluded that walk ing on Mars will probably be easier tha n walk ing on the Moon. The Moon has less gravity than Mars does, so at lunar gravity, the divers struggled to keep their bala nce and walked awkwardlyBut at Martia n gravity, the divers had greater tractio n and stability and could easily adjust to a pace of 1.5 miles per hour. As Newman gradually in creased the speed of the treadmill, the divers took Ion ger, graceful strides un til they comfortably settled into an eve n quicker pace. Newma n also no ted that at Martia n gravity, the divers needed 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.
4
Welcome to Everglades Nati onal Park. The Everglades is a watery plain covered with saw grass that's home to numerous species of plants and wildlife. At one and a half million acres, it's too big to see it all today, but this tour will offer you a good sampli ng. Our tour bus will stop first at Taylor Slough. This is a good place