题目选项分析

Operations at the Green Hills Gold Mine are continuously releasing mercury into the headwaters of the Apache River, and most fish in the Apache River now have mercury levels at or above the legal limit for human consumption. With the price of gold rising, forcing more and more mining at Green Hills, there seems no hope for food fishing along the Apache River.

Which of the following plans, if feasible, would allow the state to assist the food fishing industries along the Apache?

【选项】Every six months, the state will send testers to twelve locations along the upper and lower Apache River, to test the mercury content in the water and in fish.