difficult ? across 8- ten to the power 100 [6] 11-destined [5]12-entering [4] 24-scented ointemant [6] p---d- down 1-supernormal [7] -s-c--- 2-slopes [7] -s-e--- 4- casual shoes [7] -----r- 5-semiprecious quartz [5] 6- part of an ice skate [5] 20- axiom [5] -e---