Recent proposals for fixing the climate have taken the form of large-scale geoengineering projects such as launching mirrors into space to reflect solar radiation away from Earth, undertakings that are vastly more (i)_____ than anything a nineteenth-century rainmaker could have cooked up. What is unclear, as one looks back at the history of weather modification research, is whether this resourceful ambition will be (ii)_____, or if, by contrast, it serves to make the scientific community’s (iii)_____ that much more devastating.
答案：B,F,H