There is nothing that (i)_____ scientists more than having an old problem in their field solved by someone from outside. If you doubt this (ii)_____ , just think about the (iii)_____ reaction of paleontologists to the hypothesis of Luis Alvarez-a physicist-and Walter Alvarez-a geologist-that the extinction of the dinosaurs was caused by the impact of a large meteor on the surface of the planet.
答案：C,F,G