Q41: The Environmental Protection Agency’s proposal to place restrictions on both diesel fuel and diesel engines has sparked a counterattack by the oil industry, saying that the move will exacerbate the nation’s fuel supply problems.
- on both diesel fuel and diesel engines has sparked a counterattack by the oil industry, saying
- on both diesel fuel and engines have sparked the oil industry to counterattack, and they say
- on both diesel fuel and diesel engines has sparked a counterattack by the oil industry, which says
- both on diesel fuel and engines has sparked the oil industry to a counterattack, saying
- both on diesel fuel and diesel engines have sparked the oil industry to counterattack, and it says
a为什么不正确,给出的答案是c,c比a好在哪里... | 
