无忧小编为大家介绍4个对比类转折类的新GRE填空题，希望对各位考生有所帮助。多进行一些新GRE填空题的练习，可以帮助我们摸索出最适合自己的做题方法，快速准确地攻克新GRE填空题。

　　5. Although the theory that widespread lead poisoning contributed to the decline of the Roman Empire has gained ______, the evidence is still ______.