【文章內(nèi)容簡(jiǎn)介】 ong the audiences35. According to the passage，the Empire Builder enjoyed an increase in ridership and profits because ______ .A) the attractiveness of its name and route was effectively advertisedB) it provided an exciting travel experienceC) its passengers could enjoy the great western outdoorsD) it was widely advertised in newspapers and magazines in Chicago and Seattle Questions 36 to 40 are based on the following passage:Why does cream go bad faster than butter? Some researchers think they the answer，and it es down to the structure of the food，not its chemical position a finding that could help rid some processed foods of chemical ream and butter contain pretty much the same substances，so why cream should sou r muchfaster has been a are emulsions tiny globules(小球)of one liquid evenly distributed throughout difference lies in what’s in the globules and what’s in the surrounding liquid，says Brocklehurst，who led the cream，fatty globules and what’s in the surround ing liquid，says Brocklehurst，who led the cream，fatty globul es drift about in a sea of butter，globules of a watery solution are l ocked away in a sea of bacteria which make the food go bad prefer to li ve in the watery regions of the mixture.‖This means that in cream，the bacteria are free to grow throughout the mixture，‖he the situation is revers ed，the bacteria are locked away in partments (密封倉(cāng)) buried dee p in the sea of in this way，individual colonies cannot spread and rapidly run out of also slowly poison themselves with their wast e products.‖In butter，you get a self limiting system which stops the bacteri a growing，‖says researchers are already working with food panies keen to see if their products can be made resistant to bacterial attack t hrough alterations to the food’s believes it will be pos sible to make the emulsions used in salad cream，for instance，more like that in key will be to do this while keeping the salad cream liquid and not turning it into a solid lump.36. The significance of Brocklehurst’s research is that ______ .A) it suggested a way to keep some foods fresh without preservativesB) it discovered tiny globules in both cream and butterC) it revealed the secret of how bacteria multiply in cream and butter 5 D) it found that cream and butter share the same chemical position37. According to the sours faster than butter because bacteria_____ .A) are more evenly distributed in creamB) multiply more easily in cream than is butterC) live on less fat in cream than in butterD) produce less waste in cream t han in butter38. According to Brocklehurst，we can keep cream fresh by ______ .A) removing its fat B) killing the bacteriaC) reducing its water content D) altering its structure39. The word―colonies‖(Line 2，) refers to ______ .A) tiny globules B) watery regionsC) bacteria munities D) little partments40. Commercial application of the research finding will be possible if s alad cream can be made resistant to bacterial attack ______ .A) by varying its chemical position B) by turning it into a solid lumpC) while keeping its structure unchanged D) while retaining its liquid form 2000年6月大學(xué)英語(yǔ)四級(jí)考試試題Questions 51 to 55 are based on the following passage:Long after the 1998 World Cup was won, disappointed fans were still cursing the disputed refereeing (裁判) decisions that denied victory to their team. A researcher was appointed to study the performance of some top referees.The researcher organized an experimental tournament (錦標(biāo)賽) involving four youth teams. Each match lasted an hour, divided into three periods of 20 minutes during which different referees were in charge.Observers noted down the referees’ errors, of which there were 61 over the tourn ament. Converted to a standard match of 90 minutes, each referee made almost 23 mistakes, a remarkably high number.The researcher then studied the videotapes to analyse the matches in detail. Sur prisingly, he found that errors were more likely when the referees were close to the incident. When the officials got it right, they were, on average, 17 meters away from the action. The average distance in the case of errors was 12 research shows the optimum (最佳的) distance is about 20 meters.There also seemed to be an optimum speed. Correct