(单词翻译:单击)
听力文本
Drivers the world over may soon haverespite from potholes and cracks in the road. Scientists from the universitiesof Bath, Cambridge and Cardiff havecomeup witha novel and innovative solution to plugging gaps and holes in roadsand highways. They have created a bacteria-filled concrete to prevent cracks ina road from becoming larger. The concrete is full of bacteria that open whenwaterseeps intoa crack. Thebacteria burst open and inject limestone into the crack, thus filling andrepairing it to avert moreseriousdamage. The scientists believe their discovery could considerably increasethe lifespan of roads, reduce repairs, and lower roadwork costs by up to 50 percent.
The new concrete could be good news for theenvironment. Scientists estimate that over seven per cent of the world's CO2emissions come from the production of cement. If less cement is needed torepair roads, there will be fewer pollutants entering the atmosphere. Anotherbenefit of the new cement is a reduction in accidents, injuries and deaths thatresult frompotholes. Thousands ofmotorists and pedestrians worldwide are killed because drivers swerve to avoidholes in roads. There is also good news for local governments. In Britainalone, at least 40,000 drivers a year claim compensation for damages to theircar caused by potholes. The concrete could be put to use in the next 20 years.
中文翻译
世界各地的司机可能很快就能摆脱道路上的凹坑和裂纹了。英国巴斯大学、剑桥大学和卡迪夫大学的科学家们已经想出了一个新颖的具有变革意义的办法来填补道路和高速公路上的缝隙和孔洞。他们创造出来一种可填充的细菌混凝土，这种混凝土能够防止道路上面的裂缝变大。混凝土中充满了细菌,当水渗入裂缝，这种细菌就会膨胀。细菌突然张开,注入石灰岩的裂缝,这样就能填充和修复裂缝,避免更严重的损坏。科学家们相信,他们的发现可以大大提高道路的使用寿命,减少维修,为长跑训练节省一半成本。
新混凝土对环境也有好处。科学家预测,世界上百分之七的二氧化碳排放量来自水泥生产。如果需要更少的水泥修复道路,那将会有更少的污染物进入大气中。新水泥的另一个好处是减少因凹坑导致的交通事故,受伤和死亡。全世界成千上万的司机和行人死亡的原因是司机因为紧急避让道路上的坑洞导致的。这对地方政府也是一则好消息。仅在英国,每年至少有40,000名司机要求赔偿凹坑对他们的车造成的损害。这种新型混凝土可能将在20年之后投入使用。
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重点讲解
1.comeup with提出；想出；赶上
For your design you want to come up withkey abstractions, and then you want to have your other code just interact withthose abstractions, not with the specific implementations.
就你的设计而言，你希望能提出一些关键的抽象，然后其他的代码只要负责和这些抽象，而非具体实现进行互相作用。
2.seepinto渗入；影响到；流入
This new wave of research will not seepinto the public realm in the form of militant atheism.
这一轮新的研究将不会以战斗无神论的形式渗入到公共领域。
3.seriousdamage严重损害；严重损坏
And she says Cheney repeated the warninggiven earlier by other administration officials - that Russia risks seriousdamage to its relationship with the United States.
她说，切尼重申了其他美国政府官员早些时候发出的警告，那就是俄罗斯面临严重损害与美国关系的风险。
4.resultfrom起因于；由……造成
The nested loopjoin method is used to join the remote query result from each warehouse and theXML composite view result.
这里使用了嵌套的循环连接方法来连接来自每个仓库的远程查询结果和XML 合成视图结果。
听力题目
1.Where are the drivers from who will haverespite from cracks in roads?
a) China
b) the world over
c) three British universities
d) the USA
2.What two adjectives described thesolution to plugging gaps?
a) hard and soft
b) ready and available
c) bookish and cutting-edge
d) novel and innovative
3.What seeks into a crack that activatesthe bursting of bacteria?
a) water
b) CO2
c) tar
d) dirt
4.What gets injected by the bacteria intothe cracks?
a) plastic
b) tar
c) limestone
d) CO2
5.What could get reduced by up to 50 percent?
a) the number of cars
b) roadwork repairs
c) traffic jams
d) C02 emissions
6.What could the new concrete be good newsfor?
a) the environment
b) cyclists
c) city planners
d) tar companies
7.How much of the world's CO2 emissionscome from cement production?
a) 5%
b) 6%
c) 7%
d) 8%
8.What will there be less of in the air ifthe new cement is used?
a) pollutants
b) light
c) dust
d) bees
9.What do many drivers do to avoid holes inroads?
a) swerve
b) stop
c) speed up
d) reverse
10.How many UK drivers claim compensationeach year?
a) just under 40,000
b) between 14,000 and 40,000
c) around 14,000
d) over 40,000
听力答案
1. b
2. d
3. a
4. c
5. b
6. a
7. c
8. a
9. a
10. d
