The enemy desecrate the church by using it as a stable. 敌人亵渎这所教堂，把它当做马厩。 A: execrate B: degrade C: upgrade D: excrete

Mercury is a metal pollutant that can disrupt the ecosystem. Why is mercury so disruptive to the ecosystem? A: Organisms excrete the mercury out as waste. B: Organisms use mercury as an enzyme to speed up reactions in an organism's body. C: Mercury slows down the respiration rates of primary consumers. D: Mercury can become concentrated in the tissues of organisms.