137. Bubble gum is not a topic usually treated seriously, so it is appropriate that this new book tracing the cultural history of bubble gum has a ______ tone.
A. morbid
B. cathartic
C. pedantic
D. flippant
E. reticent
138. Jamake Highwater manages to touch on the arts of almost every American Indian nation in one reasonably sized book that makes up for its occasional lack of ______ with its remarkable ______ .
A. specificity, detail
B. discontinuity, concreteness
C. loftiness, inaccessibility
D. profundity, iclusiveness
E. uniqueness, comparability