1. The senior professor was _______ thinker who believed in doing even tedious calculations by hand rather than using a computer.   an insensible   a cogent   an eclectic   an ingenuous   a doctrinaire   Hint Hint       2. Scientific investigations of fluid flow behavior around objects like high-speed aircrafts are complex; however, the systems are _______ when experiments are performed in scaled-down versions such as wind tunnels.   permeable   malleable   implacable   tractable   turbulent   Hint       3. After having _______ arguments virtually every other day, the couple agreed that it was best for them to separate.   saturnine   astringent   acerbic   effulgent   assiduous   Hint       4. This _______ verse mourns for the valiant soldiers who lost their lives in the battle.   desultory   satiric   ironic   derivative   elegiac   Hint       5. The _______ allowance he received as a pension forced him to spend the rest of his life in _______.   munificent..conundrum   mundane..malady   magnanimous..austerity   mendacious..luxury   meager..penury   Hint       6. Any increase in coal-fired furnaces beyond a particular level necessitates greater _______ the fossil fuels; thus, the capability of an economy to effectively manage energy resources depends partially on _______ the number of industrial fired heaters.   trust in..enhancing   yield from..conforming   depletion of..renewing   recourse to..restricting   expenditure on..budgeting   Hint       7. The air-conditioning unit was operated so as to strike some balance between the danger of _______ electricity bills and the desire of employees to be comfortable during the summer months.   optimum   exigent   inordinate   inchoate   prudent   Hint