GRE Text Completion: OG/PP2-GRE填空OG/PP2 - 3KT38W43IYXJJ11KF

With the 1985 discovery of an ozone hole over Antarctica, an international ban on the production of chlorofluorocarbons – implicated in causing the ozone hole – began to appear ____________, especially since chemical companies' opposition to such a ban had weakened. A. imprudent B. fortuitous C. premature D. imminent E. unlikely