题目内容
For more than a decade, dieticians and nutritionists harangued us to lower the amount of fat in our diet. As it hap pens, their message was only partly correct. Although all fats are high in calories, certain fats, like the omega-3 fatty acids commonly found in fish, are actually good for us, provided we consume them in moderation. Not only do omega-3s reduce the risk of clot formation in blood vessels, they also lower the amount of triglycerides, another fatty substance in the blood. The bottom line is that folks who eat 6 to 8 oz. of fatty fish a week experience significantly fewer heart attacks and strokes.
Still on the consume-sparing lists are saturated fats, commonly found in red meats and whole-milk dairy products. Recent studies also suggest that another group fats, called trans-fatty acids, found in abundance in crackers and cookies prepared with hydrogenated oils, may be an even more dangerous promoter of high cholesterol than saturated fats.
The most immediate benefit from adopting a healthy diet is that it can lower blood pressure. Even ff you don't have hypertension, decreasing your blood pressure makes your blood vessel springier and can help stabilize potentially dangerous plaques in the arteries. Two major studies have shown that DASH(Dietary Approaches to Stopping Hypertension) diet—which emphasizes fruits and vegetables, promotes low-fat dairy and high-fiber grains, permits modest portions of lean meat and reduces sodium intake can lower blood pressure as effectively as taking a prescription anti-hypertension drug. Just as important, the foods are filling, taste good and aren't that different from what most Americans are used to eating.
Which of the following is the best title for the passage？
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A．control of natural hazardsB．control of heavy trafficC．control of heart diseaseD．cont
听力原文： Today I'm going to discuss transportation and communication in the early 19th century in the United States. At that time, inland waterways provided North America's most popular form. of long distance transportation. Travel by river was often more convenient than taking a wagon over primitive country roads, especially when shipping heavy loads of farm products or household goods, Where the natural water ways were inadequate, shallow canals were built. The Erie Canal, opened in 1825, connected the Great Lakes with the upper Hudson River. It allowed settlers in the Great Lakes region to send their crops eastward to New York City at the mouth of the Hudson at a much lower cost. From there, crops could be shipped to other Atlantic ports. The construction of the Erie Canal also encouraged westward migration along inland waterways and helped populate the frontier. The City of Detroit grew up between two of the Great Lakes. Later a canal joined the Great Lakes with the Mississippi river system and Chicago became a thriving city. Politically the waterway system united the nation in a way few had imagined possible. By the mid-1800's faster and cheaper railroads became more popular and the canal system de dined. Railroads could be used year round whereas canals were often frozen in the winter. During the first third of the century, however, transportation on rivers, lakes and canals aided greatly in the growth of the United States. Next week we'll discuss the railroads in greater detail.
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听力原文：W: Oh, Jackie, I've had such a terrible day.
M: You look exhausted. What on earth have you been doing？
W: Oh, I've been such a fool! You just wouldn't believe what I've done.
M: I would, I would. Come on...Where's you been？
W: I'm dying to tell someone. I've been down to London, you see. OK, I thought I'd be very sensible, so I'd drive down to the Underground on the outskirts of London, leave the car and go in by tube. All right？ Very sensible. Yes？ OK. So I drove down to London and I parked my car by the tube station and I got the tube into London: Fine! All right？
M: Well, sounds like it.
W: So far, so good. Right. I came back out of London and got out of the tube.
M: And you forgot the car？
W: No, no, I didn't forget the car. I couldn't find the car, Jackie. It'd gone.
M: You're kidding.
W: No, no, really, it'd gone. I walked out...happily out of the tube, you know, over to where it was and I looked and it was a red Mini and mine's green, so I thought "Oh no". So having panicked a bit, I rang the police, you see, and this lovely, new little policeman...a young one came out to help. That's it, yes...buttons shining...big smile...came down to help, so I said, "I've lost my car. It's been stolen." And I took him to see it and everything and...
M: You mean where it wasn't.
W: And sure enough, it wasn't there. And then he coughed a bit and he went very quiet.., and he took me back into the tube station and out the other side into the other car park.., and there was my car, Jackie, parked in the other tube station car park, the other side of the station, because there are two exits, you see, so I walked out of an exit not knowing, there were two and it was in the other one.
M: Oh Lesley. And was he ever so cross？
W: He was livid, Jackie. He went on and on at me and I didn't know what to do. It was just frightful. I went red and just shut up and said "Sorry" all the time.
M: Jumped in your car and left.
W: Oh, it was awful. I'm never doing that again ever.
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Section B
Directions: There are 2 passages in this section. Each passage is followed by some questions or unfinished statements. For each of them there are four choices marked A, B, C and D. You should decide on the best choice.
When Mike Kelly first set out to build his own private space-ferry service, he figures his bread-and-butter business would be lofting satellite into high-earth orbit. Now he thinks he may have figured wrong. "People were always asking me when they could go," says Kelly, who runs Kelly Space & Technology, "I realized the real market is in space tourism."
According to preliminary market surveys, there are 10,000 would-be space tourists willing to spend $1 million each to visit the final frontier. Space Adventures in Arlington has taken more than 130 deposits for a two-hour, $98,000 space tour tentatively set to occur by 2005. This may sound great, but there are a few hurdles. Putting a simple satellite into orbit—with no oxygen, life support or return trip necessary—already costs an astronomical $22,00/kg. And that doesn't in elude the cost of insuring rich and possibly litigious passengers. The entire group of entrepreneurs trying to corner the space-tourism market have between them "just enough money to blow up one rocket."
The U.S. space agency has plenty of money but zero interest in making space less expensive for the little guys. So the little guys are racing to do what the government has failed to do: design a reusable launch system that's inexpensive, safe and reliable, Kelly Space's prototype looks like a plane that has sprouted rocket engines. Rotary Rocket in California has a booster with rotors to make a helicopter-style. return to Earth. The first passenger countdowns are still years away, but bureaucrats at the Federal Aviation Administration in Washington are already informally discussing flight regulations. After all, you can't be too prepared for a trip to that galaxy far, far away.
Which of the following is the best title for the passage？
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