The reading passage argues that NGV has many advantages. On the other hand, the lecturer asserts the opposite by looking at whether NGV is the best solution for problems caused by gasoline. The lecturer talks about the reasons why there are relatively few of NGVs on the road. Thus, contradicts the reading passage's claim that NGV is faultless.
First, according to the lecturer, natural gas is actually not a renewable energy since it is a fossil fuel, too. Like gasoline, natural gas will be depleted in the near future. Thus, this casts doubts on the reading passage's argument that natural gas is environmentally friendly because it still has features as a fossil fuel.
Second, the lecturer insists that NGV has not enough space for carry people's luggage because of the size of its storeroom for natural gas. In addition, the price for making the device is high. Therefore, the lecturer contradicts the reading passage's claim that NGV is convenient.
Finally, NGV has a limited range of driving. Natural gas is not as efficient as gasoline. To take a case of Honda CIVIC, the vehicle only can go less distance than cars which use gasoline as a source of energy. As a result, NGV needs more time to refill and it makes overall cost of driving NGV higher. This finding effectively rebuts the reading passage's explanation that NGV is more economical. |