GRE Reading Comprehension: ETS Official Practice 150-GRE OP150: 阅读 - Y007P7175MYQM373Z

The passage suggests that the proliferation of ragwort was particularly ill-timed because it A. coincided with and exacerbated a decline in agriculture B. took place in conditions that enabled the ragwort to spread faster than it otherwise would have done C. led to an increase in the amount of toxic compounds contained in the plants D. prevented people from producing honey that could be eaten safely E. had consequences for livestock that were more dramatic than they otherwise would have been