GRE Logical Reading: ETS-GRE逻辑单题ETS - 67HPYD316929E3QEK$

It is impossible to believe scientific predictions that a long "nuclear winter" would envelop the Earth as a result of nuclear war. Atmospheric scientists and weather experts cannot reliably and accurately predict tomorrow's weather. Yet the effect of nuclear explosions on local and worldwide atmospheric conditions must follow the same laws that control everyday weather changes. if the weather cannot be predicted with present knowledge, neither can a nuclear-winter scenario.