LSAT-26-3-9/LSAT-26-3-10

yzlinlin

Questions 9-10
If a person chooses to walk rather than drive, there is one less vehicle emitting pollution into the air than there would be otherwise. Therefore if people would walk whenever it is feasible for them to do so, then pollution will be greatly reduced.
9.    Which one of the following is an assumption on which the argument depends?
(A) Cutting down on pollution can be achieved in a variety of ways.
(B) Taking public transportation rather than driving is not always feasible.
(C) Walking is the only feasible alternative to driving that results in a reduction in pollution.
(D) There are people who never drive but who prefer walk.
(E) People sometimes drive when it is feasible to walk instead.
10.    Which one of the following, if true, most strengthen the argument?
(A) If automobile passengers who never drive walk instead of ride, there will be fewer vehicles on the road as a result.
(B) Nonmoving running vehicles, on average, emit half as much pollution per second as moving vehicles, but the greater congestion is, the more nonmoving running vehicles there are.
(C) Since different vehicles can pollute at different rates, it is possible for one driver who walks to make a greater contribution to pollution prevention than another driver who walks.
(D) On average, buses pollute more than cars do, but buses usually carry more passengers than cars do.
(E) Those who previously rode as passengers in a vehicle whose driver decides to walk instead of drive might themselves decide to drive.

答案分别是EB。

9中我觉得B和C(尤其是C)的假设也不错啊。另外，10为什么不选A？

番茄炒蛋

1,because people often drive when it is feasible to walk ,so the new suggestion that people shoule walk as much as possible will reduce the pollution.

2,pollution can be dibidede into two kinds,one is cause by running vehicles,the other is caused by nonrunining vehicles,such as the car waiting before the red light
there are more vehicles in the road ,there are more congetions,so the pollution will be greater.

these part of passengers do not cause any pollution before,so even  they will not drive in the future ,the pollution will not be reduced by their action.at most be kept at a constant level.
so it support conclusion by sueggeting that the best way of reduce pollution is walk instead of driving.

yzlinlin

多谢！