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大学英语六级考试巅峰训练一本通 Model test 2
2014-08-14来源:和谐英语
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[16:21.46]He also knows that many insects prefer attacking
[16:24.55]dry plants rather than healthy plants.
[16:27.46]How do the insects know which are healthy plants and
[16:29.54]which are not?
[16:30.74]Robert thinks that the insects may listen for the plants
[16:33.11]that cry and then they may buzz in to kill.
[16:36.46]To test his theory,
[16:37.77]Robert is using a device that can imitate plant cries.
[16:40.89]He attaches it to a quiet,
[16:42.16]healthy plant so the plant sounds thirsty.
[16:45.43]Then he watches insects to see if they attack more
[16:47.96]often than usual.
[16:49.89]If he is right, scientists could use
[16:51.71]the insects’ ability against them.
[16:53.93]They could build traps that imitate crying plants.
[16:56.73]So when the insects buzz in to eat, they won’t buzz out.
[17:00.41]Questions 29 to 31 are based on the passage you have just heard.
[17:04.73]29. What do plants do when they are thirsty?
[17:23.27]30. What plants do many insects tend to attack?
[17:41.85]31. What could scientists do if Robert’s theory proves
[17:45.85]to be true?
[18:01.53]Passage Three
[18:03.39]What kind of car will we be driving by the year 2010?
[18:07.25]Rather different from the type we know today.
[18:09.61]With the next decade bringing greater change than the
[18:12.15]past 50 years, the people who will be designing the
[18:14.80]models of tomorrow believe that environmental problems
[18:17.42]may well accelerate the pace of the car’s development.
[18:21.53]The vision is that of a machine with 3 wheels instead
[18:23.92]of 4, electrically-powered environmentally clean and
[18:27.34]able to drive itself along intelligent roads,
[18:30.58]equipped with built-in power supplies.
[18:33.20]Future cars will pick up the fuel during long journeys
[18:36.11]from a power source built into the road,
[18:38.88]or stored in small quantities for travelling in the city.
[18:42.73]Instead of today’s seating arrangement two in front,
[18:45.64]two or three behind, all facing forward, the 2010 car
[18:50.05]will have an interior with adults and children
[18:52.45]in a family circle.
[18:54.64]This view of future car based on a much more
[18:56.70]sophisticated road system.
[18:58.80]Cars will be automatically controlled by a computer.
[19:01.59]All the driver will have to do is say where to go and