(MB) You'll recall that in last week's class I talked about how the sound made by most animals, though sometimes complex, are different from human language. Only in humans do these sounds represent objects and events. Keep in mind that most animals

发表于:2018-12-11 / 阅读(51) / 评论(0) 分类 托福听力短文

(WA) The winds of a tornado are the most violent and destructive ones on Earth. Any of you who have seen one knows very well how frightening and powerful they are. What's interesting about them is that scientists don't actually know exactly why torn

发表于:2018-12-11 / 阅读(47) / 评论(0) 分类 托福听力短文

(MA) Okay, as you look at this next exhibit, you'll notice something quite common --- an ordinary bar of soap. Now, soap has been around a long time --- in fact, the ancient Phoenicians produced soap as a substance for washing the body way back in 6

发表于:2018-12-30 / 阅读(67) / 评论(0) 分类 托福听力短文

(MA-AT) Since we've been discussing alternative fuels lately, I wanted to pass on to you some information I read about a new fuel that's been in the news a lot lately. It's called A-21. It's composed of water and a chemical known as naphtha. It seem

发表于:2018-12-30 / 阅读(62) / 评论(0) 分类 托福听力短文

(WB) Before we adjourn, I'd like to remind everybody about the upcoming fundraising event--- the ten kilometer run. The run is being organized to help raise money for the renovation of the old gym. Our gym is in desperate need of repair, and the uni

发表于:2018-12-30 / 阅读(48) / 评论(0) 分类 托福听力短文

(MA) We've probably all wondered how a new word gets into the dictionary. Take the word doofus, for example, spelled d-o-o-f-u-s, meaning a stupid or incompetent person. This word, which has been around since the late 1960's in a slang sense, made i

发表于:2018-12-30 / 阅读(38) / 评论(0) 分类 托福听力短文

(WA) Today, I'd like to turn our attention to an area of management often overlooked in traditional management courses: small-business management. Small businesses have gone from being traditional small-town stores selling food or clothing to sophis

发表于:2018-12-30 / 阅读(82) / 评论(0) 分类 托福听力短文

(MA) Welcome to the largest retrospective exhibit this art museum has ever devoted to an architect. The architect chosen for this honor is Frank Lloyd Wright --- probably the greatest United States architect of the twentieth century. Wright has the

发表于:2018-12-30 / 阅读(39) / 评论(0) 分类 托福听力短文

(WA) One reason oceanographers analyze the sediment on the ocean floor is to see how long-terms changes in Earth's temperature have affected the depth of the ocean. By analyzing the remains of sea animals in old layers of ocean sediment, oceanograph

发表于:2018-12-30 / 阅读(45) / 评论(0) 分类 托福听力短文

(WA-WW) Yesterday we talked about the anecdote. Today we're going to move on to one of the most popular literary forms in Western literature --- the short story. A short story is a piece of prose fiction, usually under 10,000 words. Although it's si

发表于:2018-12-30 / 阅读(44) / 评论(0) 分类 托福听力短文

(man) Today I want to discuss fossil fuels such as coat, oil, and natural gas. The term fossil fuel refers to the trapped remains of plants and animals in sedimentary rock. You see, living plants trap energy from the sun by the process of photosynth

发表于:2018-12-30 / 阅读(58) / 评论(0) 分类 托福听力短文

(WA) OK. In the last class we talked about the classification of trees, and we ended up with a basic description of angiosperms. You remember that those are plants with true flowers and seeds that develop inside fruits. The common broadleaf trees we

发表于:2018-12-30 / 阅读(75) / 评论(0) 分类 托福听力短文

(MA) Now let's focus on comics in the 1950's. Early in the decade sales were down, so publishers started looking for some new angle to get their readers interested again. They found what they were looking for with horror comics --- stories about gho

发表于:2018-12-30 / 阅读(46) / 评论(0) 分类 托福听力短文

(Woman) So, why did what is now called modern dance begin in the United States? To begin to answer this question, I'll need to backtrack a little bit and talk about classical ballet. By the late 1800's, ballet had lost a lot of its popularity. Most

发表于:2018-12-30 / 阅读(52) / 评论(0) 分类 托福听力短文

(woman) This room is devoted to electric fish. The eel in the tank behind me can produce a strong jolt of electricity to stun its prey, but most of the fish in here produce only weak electrical impulses that are useful for navigating, locating food,

发表于:2018-12-30 / 阅读(64) / 评论(0) 分类 托福听力短文

(woman) Before I tell you about the interesting discovery related to Tyrannosaurus rex, I need to review something we studied last semester --- the difference between what are commonly called cold-blooded and warm-blooded animals. In warm-blooded an

发表于:2018-12-30 / 阅读(45) / 评论(0) 分类 托福听力短文

(Woman) Today I want to talk about the Earth's last major climatic shift, at the end of the last ice age. But first, let's back up a moment and review what we know about climatic change in general. First, we defined climate as consistent patterns of

发表于:2018-12-30 / 阅读(116) / 评论(0) 分类 托福听力短文

(woman) Good afternoon. I'm here today to talk to you about a career with our airline. We're especially interested in recruiting people to fill openings for flight attendants. First of all, to work as a flight attendant with us, you must be accepted

发表于:2018-12-30 / 阅读(102) / 评论(0) 分类 托福听力短文

(man) Current studies show that what goes on labels is an important consideration for manufacturers, since more than seventy percent of shoppers read food labels when considering whether to buy a product. A recent controversy as to whether labels on

发表于:2018-12-30 / 阅读(85) / 评论(0) 分类 托福听力短文

(woman) Today we're going to practice evaluating the main tool used when addressing groups --- the voice. There are three main elements that combine to create either a positive or negative experience for listeners. They can result in a voice that is

发表于:2018-12-30 / 阅读(89) / 评论(0) 分类 托福听力短文