骑自行车对环境有害？
An American lawmaker has said cycling is bad for the environment. Ed Orcutt, a representative from Washington State, sent an e-mail to the owner of a local bike shop to outline his thinking. He wrote, “A cyclist has an increased heart rate and respiration(呼吸). That means that the act of riding a bike results in greater emission of carbon dioxide(CO2) from the rider. Since CO2 is a greenhouse gas, cyclists are actually polluting when they ride.” Mr Orcutt said, “You can’t just say that there’s no pollution as a result of riding a bicycle. You would be giving off more CO2 if you are riding a bike than driving in a car.”
Mr Orcutt also believes cyclists should be taxed(征税) to use the roads. He said it was unfair that motorists have to pay all of the costs of building and repairing roads. He wrote, “Currently motorists are paying to use their cars on the roads, so if motorists pay for the roads they are using, it only makes sense that cyclists would also be required to pay for the roads they use when they are actually biking on them.”
Dale Carlson, owner of the Tech Bike Shop said Mr Orcutt’s ideas were wrong. He wrote, “People who choose to ride a bicycle instead of driving a car actively reduce traffic jam.” He added, “They save wear and tear on our roads and bridges, and reduce the need for police to patrol(巡逻) our highways.”
1.Cycling _________ the environment according to Mr Orcutt.
A is good with
B has no influence on
C does harm to
D is good for
解析：选C。C 细节理解题。根据第一段“...cyclists are actually polluting when they ride.”可知Ed Orcutt认为骑自行车对环境有害，故选C。
2.Who gives off less CO2 according to Mr Orcutt?
A A person driving a car.
B A person riding a horse.
C A person running fast.
D A person riding a bike.
解析：选A。A 细节理解题。根据第一段最后一句You would be giving off more CO2 if you are riding a bike than driving in a car.可知Mr Orcutt认为骑自行车的人比开车的人释放更多的二氧化碳，即开车的人释放更少的二氧化碳，故选A。
3.Which of the following is NOT true?
A Drivers have to pay the tax to use the roads.
B Driving instead of biking can increase traffic jam.
C Cycling instead of driving can increase traffic jam.
D Cyclists don’t need to pay the tax to use the roads now.
解析：选C。C 细节理解题。根据第三段“People who choose to ride a bicycle instead of driving a car actively reduce traffic jam.”可知骑自行车相对开车而言可以减少交通拥堵，C项错误，故选C。
4.Which word can be used to replace the word “motorists”?
A Walkers.
B Riders.
C Drivers.
D Cyclists.
解析：选C。C 词义猜测题。根据motorists所在句下文“motorists are paying to use their cars”，并结合cyclists可知motorists指的是开车的人，故选C。
5.From the passage, we know that _________.
A a good medicine tastes bitter
B easier said than done
C all roads lead to Rome
D every coin has two sides
解析：选D。D 推理判断题。根据全文可知骑自行车的人虽然呼出较多二氧化碳，但是可以减少交通堵塞、道路和桥梁磨损以及交警巡逻的需要。即骑自行车有利也有弊，也就是具有“两面性”，故选D。