单项选择题
A．potato: tuber B．cactus: spine C．melon: gourd D．bud: stalk E． grove: timber
A．flush: decency B．salute: respect C．collapse: ennui D．obstruct: quandary E． apprehend: dread
A．classified: detail B．attractive: satisfaction C．elegant: deportment D．amenable: mind E．servile: admiration